Slapton Sands beach itself is a bar: the material that makes up the beach was pushed up by the rising sea levels during the Flandrian transgression after the last glacial period (from 10,000 to 5,000 years ago). Beaches formed like this are reworked by coastal processes now but are not supplied by enough material to recreate them, should material be removed. This had terrible consequences nearby at the village of Hallsands in South Devon where most of the beach was removed as building material for Devonport dockyards, leaving the village exposed to storms. It was struck by a storm in 1917 and most of the village was washed away, although no villagers were killed.