Acknowledgements

Many Thanks to our contributors of large data sets:

• Pine Mountain Grotto

• The Kentucky Geological Survey (KGS) Archive

• Bill Andrews (topographical maps)

• Lou Simpson

• Roger Sperka

• Lee Florea

• Dayton Area Speleological Society (DASS)

• Center for Cave and Karst Studies (CCKS)

• Western Kentucky Speleological Survey

• Jim Currens

• Dave Schang

• Joe Saunder's and Keith Ortiz

• Don Coons

• Mike Dyas for the WKSS Topo Project

• Dick Blenz for his KY Cave Files