Black Holm is a small tidal island in the Orkney Islands, near

Copinsay Copinsay ( non, Kolbeinsey) is one of the Orkney Islands in Scotland, lying off the east coast of the Orkney Mainland. The smaller companion island to Copinsay, Horse of Copinsay lies to the northeast. The Horse is uninhabited, and is managed a ...

to the west of

Corn Holm Corn Holm is a small tidal island in Orkney, near Copinsay to the west, off the north-eastern coast of Scotland. There was once a small chapel there,Haswell-Smith, Hamish. (2004) ''The Scottish Islands''. Edinburgh. Canongate. and it is covered ...

off the north-eastern coast of

Scotland Scotland (, ) is a Countries of the United Kingdom, country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a Anglo-Scottish border, border with England to the southeast ...

Geography and geology

Corn Holm is made up of red

sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates ...

. At low tide it is connected to

which is in turn connected to Copinsay by a stretch called "Isle Rough".

References

Islands of the Orkney Islands Tidal islands of Scotland {{Orkney-geo-stub