Rock wall with a dark hole, entrance to the cave in Spro, Mineral historic mine. Nesodden Norway. Nesoddtangen peninsula Stock Photo - Alamy
Grandpa's Hole Cave - Missouri Caves and Karst Conservancy
Vertical cave safety concerns- this cave drop is surrounded by sharp rocks. Would it be possible to setup a tight static rope OVER the hole via 2 trees, and then connect another
Huge Cave With Holes On Top And River Inside Stock Photo, Picture and Royalty Free Image. Image 83388996.