Chi Keen cave system
Area: Tulum South
Length: 5,157 m
Maximum depth: 17.4 m
An unnamed cenote entrance of the system is at 21.17812, -86.54496 (Gerrard 2015).
Exploration
2013-06 - Quiet Diver Team
2013-06-06 - Mauro Bordignon, Patrick Widmann, Victoria Alexandrova, Kim Davidsson, Sebastien Kister, Alvaro Roldan, John Faulds, Henrik Danielzon, Pierre Montes, Phillip Lehman
Explorers of the multi-level cave. Length as of 6 June 2013: 16,930 ft; depth 70 ft (lower level), 17 ft (upper level).