Changes

[[Flashes]] are shallow [[lake|lakes]] formed by the subterranean collapse of abandoned [[mine]] workings. They are particularly common in the area of the worked-out [[South Lancashire]] coalfield.

'''Flashes''' are shallow [[lake]]s formed by the subterranean collapse of abandoned [[mine]] workings. They are particularly common in the area of the worked-out [[South Lancashire]] coalfield.

[[category:geography]]

[[Category:Geography]]