Prehistoric Cumbria describes the English county of Cumbria prior to the Romans Period. This includes the Mesolithic, Neolithic, Bronze Age, and Iron Age. As of 2010, 443 stone tools, 187 metal objects and 134 ceramic pots, have been unearthed in Cumbria. Likewise, various monuments, such as henges and stone circles, are widespread in the region. The survival of these monuments and 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.