 Barrowclough puts the archaeological record of the county (as of 2010) at '443 stone tools, 187 metal objects and 134 pots', plus the various monuments such as henges, stone circles, and the like.The survival of these objects has been influenced by processes such as the rise in sea levels on the west coast, erosion, deposition practices, industrial and agricultural development, and the changing interests and capabilities of antiquarians and archaeologists.The first permanent inhabitants of the Cumbria region were based in caves during the Mesolithic era.