Appletree bay on Tresco in the ISles of Scilly
At low tides it is sometimes possible to make out the boundaries of ancient fields from when the sea level was lower.

Jun 2005
Photo by Tom Corser www.tomcorser.com. Licenced under Attribution-NonCommercial-ShareAlike 2.0 England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/