Islands of Ireland: Islands stack up in Donegal

A 90-degree vertiginous cliff above, and a disappearing ground below, is no place to contemplate the nature of landscape and what actually constitutes an island. Actually I lie.

This 70ft quartzite behemoth called Berg Stack near Glencolmcille in Co Donegal leans back about five degrees making the true angle only 85 degrees. Pah, easy!