Echo River Spring ROV Recovery
Mark Wenner and Marbry Hardin dive to recover two ROV's from Echo River Spring in Mammoth Cave National Park....
Mark Wenner and Marbry Hardin dive to recover two ROV's from Echo River Spring in Mammoth Cave National Park....
The 2013 Logsdon River Expedition continues exploration beyond the sump in the Roppel section of the Mammoth Cave System....
Brian Williams, Matt Vinzant, and Mark Wenner along with a large support team took on the exploration challenge of cracking South Toohey Ridge....
Ellisons Cave is pure wonderment, with the data it’s provided failing to fully explain what you must see to believe....
The Dominican Republic Speleological Society (DRSS) in 2010 explores a sinkhole with team leader Forrest Wilson, Mark Wenner, Christian Pittaro, Thomas Riffaud and Phillip Lehman....
Exploration Beyond a Sump in the World’s Longest Cave (continued from Last Month) by Brian Williams...
The Windy River Sump Team, Black Rock River Connection. Brian Williams, Mark Wenner, Marbry Hardin, Becky Dettorre, and Forest Wilson in August 2005....