Black Hill is a mountain situated in

Morro Bay, California Morro Bay (''Morro'', Spanish for "Hill") is a seaside city in San Luis Obispo County, California, United States. Located on the Central Coast of California, the city's population was 10,757 as of the 2020 census, up from 10,234 at the 2010 ...

, part of

Morro Bay State Park Morro Bay State Park is a state park on the Morro Bay, California#Geography, Morro Bay lagoon, in western San Luis Obispo County, California, San Luis Obispo County, on the Central Coast (California), Central Coast of California. On the lagoon's ...

. It is one of a series of

volcanic plug A volcanic plug, also called a volcanic neck or lava neck, is a volcano, volcanic object created when magma hardens within a Volcanic vent, vent on an active volcano. When present, a plug can cause an extreme build-up of high gas pressure if risi ...

s called the

Nine Sisters The Nine Sisters or the Morros are a chain of twenty-three, although typically only nine are included, volcanic mountains and hills in western San Luis Obispo County, Southern California. They run between Morro Bay and San Luis Obispo. Geograph ...

Monterey Pine forest

There is a forest of Monterey Pine ''(Pinus radiata)'' trees on Black Hill, called Fleming's Forest, planted by John Fleming, a park superintendent. Fleming was working on another project and ordered twice as many trees as he needed, thinking that he would not get his entire order. Nevertheless, he received it in full and used the surplus on Black Hill. Many of the trees have died or are dying from

pine pitch canker ''Fusarium circinatum'' is a fungal plant pathogen that causes the serious disease pitch canker on pine trees and Douglas firs (''Pseudotsuga menziesii''). The most common hosts of the pathogen include slash pine (''Pinus elliottii''), loblolly p ...

, a fungal disease which also threatens the Monterey pine's remnant native groves in

Cambria Cambria is a name for Wales, being the Latinised form of the Welsh name for the country, . The term was not in use during the Roman period (when Wales had not come into existence as a distinct entity) or the early medieval period. After the ...

and on the

Monterey Peninsula The Monterey Peninsula anchors the northern portion on the Central Coast (California), Central Coast of California and comprises the cities of Monterey, California, Monterey, Carmel-by-the-Sea, California, Carmel, and Pacific Grove, California, P ...

References

External links

* {{Nine Sisters Nine Sisters Morro Bay Landforms of San Luis Obispo County, California Volcanic plugs of California Hills of California Volcanoes of California