Gugh is a small island in the Isles of Scilly off the south west tip of England. It is one km long and 0.5km wide and is joined to the larger island of St Agnes by a sand bar. As a consequence it is accessible only at low tide. There are just two houses on Gugh. The island has several entrance graves, cairns and burial mounds dating from the Bronze Age. The Old Man of Gugh is a menhir 2.7metres tall and belongs to that period.
I always see in this picture a tall old man with white beard, bracing himself against the strong Atlantic winds.
There is more background information in my post The Isles of Scilly.