Rock Glen Conservation Area is a suburban

conservation area Protected areas or conservation areas are locations which receive protection because of their recognized natural, ecological or cultural values. There are several kinds of protected areas, which vary by level of protection depending on the ena ...

located in the town of Arkona, in the municipality of

Lambton Shores Lambton Shores is a municipality in Lambton County, Ontario, Canada, that is on the southern shores of Lake Huron. History Lambton Shores was formed in 2001 when the Township of Bosanquet was amalgamated with the town of Forest, and the villages ...

Ontario Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central Ca ...

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

. The conservation area is owned and maintained by the

Ausable Bayfield Conservation Authority Ausable Bayfield Conservation Authority (ABCA) is a local conservation agency named in the Ontario Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it ...

(ABCA). The former "Ausable River Conservation Authority" was Ontario's first conservation authority, created in 1946. The Bayfield River watershed and smaller streams were added in 1971. Local municipalities and the Province of Ontario formed "Ausable Bayfield Conservation Authority" (ABCA) to prevent the loss of important local ecosystems, to protect life and property through flood management, and to build a healthier natural environment on a watershed scale. Rock Glen Conservation Area is situated in a transition zone between the

Carolinian forest The Carolinian forest refers to a life zone in eastern North America characterized primarily by the predominance of deciduous (broad-leaf) forest. The term "Carolinian", which is most commonly used in Canada, refers to the deciduous forests which ...

zone to the south, and the

Great Lakes The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes in the mid-east region of North America that connect to the Atlantic Ocean via the Saint Lawrence River. There are five lakes ...

(St. Lawrence Zone to the north), in

. On the conservation area grounds is the Arkona Lions Museum and Information Centre; which houses a collection of

Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, whe ...

period fossils and Aboriginal artifacts found in the local area.

History

Civilization around Rock Glen dates back to the time when

Paleolithic The Paleolithic or Palaeolithic (), also called the Old Stone Age (from Greek: παλαιός ''palaios'', "old" and λίθος ''lithos'', "stone"), is a period in human prehistory that is distinguished by the original development of stone too ...

or Early

First Nations First Nations or first peoples may refer to: * Indigenous peoples, for ethnic groups who are the earliest known inhabitants of an area. Indigenous groups *First Nations is commonly used to describe some Indigenous groups including: **First Natio ...

peoples used the nearby hills to hunt the barren ground for

caribou Reindeer (in North American English, known as caribou if wild and ''reindeer'' if domesticated) are deer in the genus ''Rangifer''. For the last few decades, reindeer were assigned to one species, ''Rangifer tarandus'', with about 10 subspe ...

some 10,000-years-ago. Succeeding the

humans at the end of the

Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fina ...

were the Archaic

who had adapted to a much milder climate some 6,000-years-ago. The museum at the conservation area displays "fluted points" associated with the

people and many Clovis Point Meadow Cache Blades from the Archaic aboriginal peoples. This area features some of the best

Period fossils in

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

. It is home to a 350 million year old fossil deposit. Erosion by water has exposed a geological formation called the " Hungry Hollow Formation" and washed out many of the different fossils contained there. The most commonly found fossils are

brachiopods Brachiopods (), phylum Brachiopoda, are a phylum of trochozoan animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Brachiopod valves are hinged at the rear end, whi ...

, horn

corals Corals are marine invertebrates within the class (biology), class Anthozoa of the phylum Cnidaria. They typically form compact Colony (biology), colonies of many identical individual polyp (zoology), polyps. Coral species include the important C ...

(''Heliophyllum halli''), and

crinoid Crinoids are marine animals that make up the class Crinoidea. Crinoids that are attached to the sea bottom by a stalk in their adult form are commonly called sea lilies, while the unstalked forms are called feather stars or comatulids, which are ...

stem sections; which are remains of the marine life of the

period.

Trilobites Trilobites (; meaning "three lobes") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the At ...

have also been found.Johnson, Lorraine. The natural treasures of Carolinian Canada: discovering the rich natural diversity of Ontarios Southwestern heartland. Toronto, J. Lorimer & Co., 2007. When the pioneer settlers arrived in the area in the mid-1800s, they built some

grist mills A gristmill (also: grist mill, corn mill, flour mill, feed mill or feedmill) grinds cereal grain into flour and middlings. The term can refer to either the grinding mechanism or the building that holds it. Grist is grain that has been separat ...

within the present-day conservation area, one of which was powered by an 11-metre overshot wheel. The mill pond, although dry, can still be seen immediately upstream and southwest of Rock Glen Falls. Part of the mill foundation has a platform that affords visitors an excellent view of the waterfalls. In 1907, the Rock Glen Power Company constructed a small hydro-electric dam on the Ausable River at Rock Glen. Following the formation of Ontario Hydro, the Rock Glen dam ceased operation shortly after the Second World War. In response to complaints from anglers that fish were unable to travel upstream to spawn, a Canadian Army demolition squad blew up the dam with dynamite. Parts of the old dam can still be seen in the bottom of the Ausable River. File:RGCA-Photo-19.jpg, The Waterfalls File:RGCA-Photo-02.jpg, Stairs to glen File:Bridge RGCA.jpg, A Bridge File:Plaque_RGCA.jpg, Info Plaque File:RGCA-Photo-17.jpg, Waterfalls File:RGCA-Photo-01.jpg, A river File:RGCA-Photo-08.jpg, The entrance File:RGCA-Photo-05.jpg, Picnic Grounds File:RGCA-Photo-18.jpg, Boardwalk Trail

Flora and fauna

The conservation area is home to a large diversity of species representative of both zones, and are found alongside

sugar maple ''Acer saccharum'', the sugar maple, is a species of flowering plant in the soapberry and lychee family Sapindaceae. It is native to the hardwood forests of eastern Canada and eastern United States. Sugar maple is best known for being the prima ...

beech Beech (''Fagus'') is a genus of deciduous trees in the family Fagaceae, native to temperate Europe, Asia, and North America. Recent classifications recognize 10 to 13 species in two distinct subgenera, ''Engleriana'' and ''Fagus''. The ''Engle ...

, white elm and

basswood ''Tilia americana'' is a species of tree in the family Malvaceae, native to eastern North America, from southeast Manitoba east to New Brunswick, southwest to northeast Oklahoma, southeast to South Carolina, and west along the Niobrara River to ...

. Some of these native trees are:

sycamore Sycamore is a name which has been applied to several types of trees, but with somewhat similar leaf forms. The name derives from the ancient Greek ' (''sūkomoros'') meaning "fig-mulberry". Species of trees known as sycamore: * ''Acer pseudoplata ...

sassafras ''Sassafras'' is a genus of three extant and one extinct species of deciduous trees in the family Lauraceae, native to eastern North America and eastern Asia.Wolfe, Jack A. & Wehr, Wesley C. 1987. The sassafras is an ornamental tree. "Middle Eoc ...

, cucumber magnolia,

tulip-tree ''Liriodendron'' () is a genus of two species of characteristically large trees, deciduous tree, deciduous over most of their populations, in the magnolia family (biology), family (Magnoliaceae). These trees are widely known by the common name ...

black walnut ''Juglans nigra'', the eastern American black walnut, is a species of deciduous tree in the walnut family, Juglandaceae, native to North America. It grows mostly in riparian zones, from southern Ontario, west to southeast South Dakota, south t ...

maple ''Acer'' () is a genus of trees and shrubs commonly known as maples. The genus is placed in the family Sapindaceae.Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 9, June 2008 nd more or less continuously updated since http ...

oak An oak is a tree or shrub in the genus ''Quercus'' (; Latin "oak tree") of the beech family, Fagaceae. There are approximately 500 extant species of oaks. The common name "oak" also appears in the names of species in related genera, notably ''L ...

ash Ash or ashes are the solid remnants of fires. Specifically, ''ash'' refers to all non-aqueous, non- gaseous residues that remain after something burns. In analytical chemistry, to analyse the mineral and metal content of chemical samples, ash ...

pine A pine is any conifer tree or shrub in the genus ''Pinus'' () of the family Pinaceae. ''Pinus'' is the sole genus in the subfamily Pinoideae. The World Flora Online created by the Royal Botanic Gardens, Kew and Missouri Botanical Garden accep ...

, and pawpaw. Wildflowers are abundant, with more than 50-types found within the boundaries of the Conservation Area. Small mammals and songbirds are common. There are also examples of extinct animal life along the walls of the Ausable Gorge, small sea creatures that lived 350 million years ago. Fossils of some of these ancient animals include:

, horn corals, sponge coral,

crinoids Crinoids are marine animals that make up the class Crinoidea. Crinoids that are attached to the sea bottom by a stalk in their adult form are commonly called sea lilies, while the unstalked forms are called feather stars or comatulids, which are ...

gastropods The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. Ther ...

. The park is home to the

eastern coyote An eastern coyote in the snow near the West Virginia–Virginia state line">Virginia.html" ;"title="West Virginia–Virginia">West Virginia–Virginia state line The eastern coyote is a wild North American canine hybrid with both coyote and wol ...

wood duck The wood duck or Carolina duck (''Aix sponsa'') is a species of perching duck found in North America. The drake wood duck is one of the most colorful North American waterfowl. Description The wood duck is a medium-sized perching duck. A typi ...

deer Deer or true deer are hoofed ruminant mammals forming the family Cervidae. The two main groups of deer are the Cervinae, including the muntjac, the elk (wapiti), the red deer, and the fallow deer; and the Capreolinae, including the reindeer ...

muskrat The muskrat (''Ondatra zibethicus'') is a medium-sized semiaquatic rodent native to North America and an introduced species in parts of Europe, Asia, and South America. The muskrat is found in wetlands over a wide range of climates and habitat ...

, and

common garter snake The common garter snake (''Thamnophis sirtalis'') is a species of thamnophis snake, in the natricine subfamily, which is indigenous to North America and found widely across the continent. Most common garter snakes have a pattern of yellow strip ...

Birds

Dozens of bird species can be seen. *

Eastern meadowlark The eastern meadowlark (''Sturnella magna'') is a medium-sized blackbird (family: Icteridae), very similar in appearance to sister species western meadowlark. It occurs from eastern North America to northern South America, where it is also most w ...

Red-winged blackbird The red-winged blackbird (''Agelaius phoeniceus'') is a passerine bird of the family Icteridae found in most of North America and much of Central America. It breeds from Alaska and Newfoundland south to Florida, the Gulf of Mexico, Mexico, and ...

Bobolink The bobolink (''Dolichonyx oryzivorus'') is a small New World blackbird and the only member of the genus ''Dolichonyx''. An old name for this species is the "rice bird", from its tendency to feed on cultivated grains during winter and migration. ...

American woodcock The American woodcock (''Scolopax minor''), sometimes colloquially referred to as the timberdoodle, the bogsucker, the hokumpoke, and the Labrador twister, is a small shorebird species found primarily in the eastern half of North America. Woodcoc ...

Savannah sparrow The Savannah sparrow (''Passerculus sandwichensis'') is a small New World sparrow. It was the only member of the genus '' Passerculus'' and is typically the only widely accepted member. Comparison of mtDNA NADH dehydrogenase subunit 2 and 3 sequ ...

Rose-breasted grosbeak The rose-breasted grosbeak (''Pheucticus ludovicianus''), colloquially called "cut-throat" due to its coloration, is a large, seed-eating grosbeak in the cardinal family (Cardinalidae). It is primarily a foliage gleaner. Males have black heads, w ...

Pileated woodpecker The pileated woodpecker (''Dryocopus pileatus'') is a large, mostly black woodpecker native to North America. An insectivore, it inhabits deciduous forests in eastern North America, the Great Lakes, the boreal forests of Canada, and parts of the ...

Red-eyed vireo The red-eyed vireo (''Vireo olivaceus'') is a small American songbird. It is somewhat warbler-like but not closely related to the New World warblers (Parulidae). Common across its vast range, this species is not considered threatened by the IUCN. ...

Blue jay The blue jay (''Cyanocitta cristata'') is a passerine bird in the family Corvidae, native to eastern North America. It lives in most of the eastern and central United States; some eastern populations may be migratory. Resident populations are a ...

American robin The American robin (''Turdus migratorius'') is a migratory bird of the true thrush genus and Turdidae, the wider thrush family. It is named after the European robin because of its reddish-orange breast, though the two species are not closel ...

Great-crested flycatcher The great crested flycatcher (''Myiarchus crinitus'') is a large insect-eating bird of the tyrant flycatcher family. It is the most widespread member of the genus ''Myiarchus'' in North America, and is found over most of the eastern and mid-west ...

Hairy woodpecker The hairy woodpecker (''Leuconotopicus villosus'') is a medium-sized woodpecker that is found over a large area of North America. It is approximately in length with a wingspan. With an estimated population in 2020 of almost nine million individ ...

Scarlet tanager The scarlet tanager (''Piranga olivacea'') is a medium-sized American songbird. Until recently, it was placed in the tanager family (Thraupidae), but it and other members of its genus are now classified as belonging to the cardinal family (Cardin ...

Northern oriole The northern oriole (''Icterus galbula''), considered a species of North American bird from 1973 to 1995, brought together the eastern Baltimore oriole The Baltimore oriole (''Icterus galbula'') is a small icterid blackbird common in eastern ...

Eastern kingbird The eastern kingbird (''Tyrannus tyrannus'') is a large tyrant flycatcher native to the Americas. The bird is predominantly dark gray with white underbelly and pointed wings. Eastern kingbirds are conspicuous and are commonly found in open areas ...

Field sparrow The field sparrow (''Spizella pusilla'') is a small New World sparrow in the family Passerellidae. It is about long and weighs about . The head is grey with a rust-coloured crown, white eye-ring and pink bill. The upper parts are brown streake ...

House wren The house wren (''Troglodytes aedon'') is a very small bird of the wren family, Troglodytidae. It occurs from Canada to southernmost South America, and is thus the most widely distributed native bird in the Americas. It occurs in most suburban ar ...

* Yellow shafted flicker *

Indigo bunting The indigo bunting (''Passerina cyanea'') is a small seed-eating bird in the cardinal family, Cardinalidae. It is migratory, ranging from southern Canada to northern Florida during the breeding season, and from southern Florida to northern Sout ...

Grey catbird The gray catbird (''Dumetella carolinensis''), also spelled grey catbird, is a medium-sized North American and Central American perching bird of the mimid family. It is the only member of the "catbird" genus ''Dumetella''. Like the black catbird ...

Brown thrasher The brown thrasher (''Toxostoma rufum''), sometimes erroneously called the brown thrush or fox-coloured thrush, is a bird in the family Mimidae, which also includes the New World catbirds and mockingbirds. The brown thrasher is abundant througho ...

Facilities

Located on the conservation grounds is the Arkona Lions Museum and Information Centre, which contains a large collection of birds and wildlife preserved with traditional

taxidermic Taxidermy is the art of preserving an animal's body via mounting (over an armature) or stuffing, for the purpose of display or study. Animals are often, but not always, portrayed in a lifelike state. The word ''taxidermy'' describes the proce ...

methods. The museum also has a large collection of fossils and artifacts found on or near the conservation grounds, and holds presentations and guided tours there for visitors and schools. The grounds also has many stairs, boardwalks and bridges allowing visitors to safely explore the steep sides of the

glen A glen is a valley, typically one that is long and bounded by gently sloped concave sides, unlike a ravine, which is deep and bounded by steep slopes. Whittow defines it as a "Scottish term for a deep valley in the Highlands" that is "narrower ...

and the 10.7-metre high waterfall just upstream of the

Ausable River Au Sable or Ausable may refer to various places: Michigan *Au Sable Township, Iosco County, Michigan **Au Sable, Michigan, an unincorporated community in the above township *Au Sable Township, Roscommon County, Michigan New York *Au Sable, New Y ...

. Many of fossils found in the exposed beds there date back 350-Million-Years; some of which include

and

trilobites Trilobites (; meaning "three lobes") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the At ...

, which the conservation park allows visitors to take one fossil if visibility seen without digging. There are also public washrooms, two picnic pavilions available for reservation, playground equipment by the pavilions, the lookouts located at different parts of the conservation area, and many trails for hiking. Rock Glen Conservation Area also has guided and educational hikes available for groups and schools.http://www.abca.on.ca/downloads/ED_Outdoor_Program_Descriptions_A_to_D.pdf File:RGCA-Photo-13.jpg, Arkona Lions Museum File:Rockglenfoss.jpg, Fossils File:RGCA-Photo-10.jpg, Cache Blades File:RGCA-Photo-11.jpg, Preserved Birds File:RGCA-Photo-15.jpg, Fossils

References

External links

Carolinian CanadaThe Ausable Bayfield Conservation Authority (ABCA)
{{Ontario parks Ecoregions of Canada Forests of Ontario

Flora of Eastern Canada Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous (ecology), indigenous) native plant, native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms '' ...