Add Wish List Add to Cart The item has been added Surface Geology of the Jeptha Knob Cryptoexplosion Structure, Shelby County, Kentucky The Jeptha Knob crytoexplosion structure, described by Bucher in 1925, was remapped in 1973 as part of the U.S. Geological Survey and the Kentucky Geological Survey cooperative mapping program. The... RRP: $32.00 Add to Cart The item has been added