Why this matters
Arne Bay's coastal rocks are primarily composed of Cretaceous-age limestone, formed from the accumulation of marine sediments around 100 to 145 million years ago. The area is notable for its well-exposed cliffs that provide a clear section through the Upper Cretaceous strata, including the Chalk Group, which is of interest to geologists studying the regional geological history of southern England.
What is recorded here
Arne Bay is shown as a bay on the public map of Dorset. The saved point is the map point or the centre of its mapped shape.
The public map does not by itself grant access. Check current paths, opening conditions and ownership before entering.