The knee pads are helpful - Picture of Raccoon Mountain Caverns, Chattanooga - Tripadvisor
Caving equipment - Wikipedia
Adult Sponge Knee Pads Knee Protector Gear for Volleyball Mountain Bike Skate Football Wrestling Hiking Shockproof Sponge Pad Knee Support Brace Guard Elbow & Knee Pads - Walmart.com
What knee pads and/or elbow pads should I get? : r/caving