Grótta () is a tied island at the extreme end of

Seltjarnarnes Seltjarnarnes () is a town in the Capital Region of Iceland. Seltjarnarnes is beside Reykjavik. It took on its current political form shortly after the Second World War and was formally created as a township in 1947. It is the smallest Icelandic ...

in the

Capital Region A capital region, also called a capital district or capital territory, is a region or district surrounding a capital city. It is not always the official term for the region, but may sometimes be used as an informal synonym. Capital regions can exis ...

Iceland Iceland ( is, Ísland; ) is a Nordic island country in the North Atlantic Ocean and in the Arctic Ocean. Iceland is the most sparsely populated country in Europe. Iceland's capital and largest city is Reykjavík, which (along with its ...

. During

high tide Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon (and to a much lesser extent, the Sun) and are also caused by the Earth and Moon orbiting one another. Tide tables ...

the

tombolo A tombolo is a sandy or shingle isthmus. A tombolo, from the Italian ', meaning 'pillow' or 'cushion', and sometimes translated incorrectly as '' ayre'' (an ayre is a shingle beach of any kind), is a deposition landform by which an island bec ...

is completely submerged, turning Grótta into an island. The island is accessible by foot during

low tide Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon (and to a much lesser extent, the Sun) and are also caused by the Earth and Moon orbiting one another. Tide tables ...

, giving people a window of about six hours to visit the island. Grótta and the region close by is a popular outdoor recreational area. Grótta became a

nature reserve A nature reserve (also known as a wildlife refuge, wildlife sanctuary, biosphere reserve or bioreserve, natural or nature preserve, or nature conservation area) is a protected area of importance for flora, fauna, or features of geological or ...

in 1974 and it is forbidden to visit it during

nesting season The nesting season is the time of year during which birds and some other animals, particularly some reptiles, build nests, lay eggs in them, and in most cases bring up their young. It is usually in the spring. Bird conservation Bird conservat ...

, from 1 May to 15 July. There are about 450 couples of arctic terns in Grótta. A lighthouse was originally built in 1897, a new one was built in 1947. The local

search and rescue Search and rescue (SAR) is the search for and provision of aid to people who are in distress or imminent danger. The general field of search and rescue includes many specialty sub-fields, typically determined by the type of terrain the search ...

association is named after long term

lighthouse keeper A lighthouse keeper or lightkeeper is a person responsible for tending and caring for a lighthouse, particularly the light and lens in the days when oil lamps and clockwork mechanisms were used. Lighthouse keepers were sometimes referred to as ...

Albert Þorvarðarson (1910–1973). The main house has been deserted since 1970. The municipality acquired the buildings in 1994 and they are now used as occasional facilities for groups on school trips.

References

{{DEFAULTSORT:Grotta Landforms of Iceland Tied islands Protected areas of Iceland Lighthouses in Iceland