Wikimedi'Òc

Vertical shaft (Sidesaddle Pit, Black Snake Avenue, Mammoth Cave, Kentucky, USA) 3 (40390410601).jpg - Ser Amantio di Nicolao

Vertical shaft (Mammoth Dome, Mammoth Cave, Kentucky, USA) 5 (40460069751).jpg - Ser Amantio di Nicolao

Ochre-colored dolostones (Renfro Member, Slade Formation, Middle Mississippian; Route 460 roadcut south of Frenchburg, Kentucky, USA) 1 (45772846394).jpg - Ser Amantio di Nicolao

Paleokarst in limestone (St. Louis Limestone, Middle Mississippian; Route 460 roadcut south of Frenchburg, Kentucky, USA) 2 (45745574565).jpg - Ser Amantio di Nicolao