description Trevone Round Hole Overview
The Round Hole near Trevone Bay in Cornwall, England, is a large, roughly circular opening created by the collapse of the roof of a coastal sea cave. A passage beneath the cliffs connects the cavity to the Atlantic, allowing waves and air to move through it when sea conditions and tides are suitable. It is commonly described as a blowhole, although its broad open form reflects substantial cave-roof collapse. The unfenced or exposed cliff environment requires visitors to remain clear of unstable edges.
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