Alpha Channel: No, Looped Video: No, Frame Rate: 30, Resolution: 3840x2160, Video Encoding: H.264, File Size: 101.99mb, Number of Clips: 1, Total Clip(s) Length: 0:13, Source Audio: No, No. of People: 3, Gender: Male

A sinkhole, also known as a cenote, sink, swallet, swallow or doline, is a depression or hole in the ground caused by some form of collapse of the surface layer. Soil-lined bowls, bedrock-edged chasms. Natural processes subterranean river underground stream erosion cave water table subsidence crater bedrock edged pit cavity large circle geology geological deep well crack crevice bore big long floor cliff precipice obruk cavern sedimentary rock sedimentation formation circular depth subside tephra event caving diatreme graben tectonic plate isostasy thermokarst layers aerial overhead fly drone climber climbers mountaineer alpinist cragsman caver researcher researchers research scientist people rope konya karapinar man male earth science UHD 4K 3840X2160.