In front of highwall
Nally and Haydon Lebanon Quarry, Marion County, Kentucky, USA
A view of the east highwall of the quarry. Upper Ordovician Drakes Formation is the lowest part, overlain by the Middle Devonian Boyle Formation. The New Albany Shale forms a thick overburden that must be removed before the limestone can be accessed. Alan Goldstein photo, October 2010
© Alan Goldstein