2021
ND4072 : Thirle Door and Duncansby Stacks
taken 5 years ago, near to John o' Groats, Highland, Scotland
This is 1 of 3 images, with title Thirle Door and Duncansby Stacks in this square

Thirle Door and Duncansby Stacks
Sea Stacks
Sea Stacks are pillars of rock found on cliffed coastlines around the country. They are a result of marine erosion and wave attack. Many famous stacks are given names. When a stack has been eroded it becomes a stump, before finally disappearing.
Natural Arches
Natural Arches are features of coastal erosion. They are found on cliffed coastlines and result from wave attack punching a hole through a headland. They are temporary features in the landscape, their roofs often collapse leaving stacks.
