Actun Koh cave system

Area: Puerto Aventuras

Length: 5,156 m

Maximum depth: 16.5 m

This cave system has many different characteristics. There is a series of huge rooms with some containing air spaces in its dome ceiling. It is a very decorative in some sections and other parts. It is your typical Swiss cheese, saltwater area.

The best dives are the Bear's Den circuit, the Wonderland line, and the downstream traverse.

Exploration

• 1996 - A French Cave Diving team

• 1996 - Expédition Yuc 96

  Survey: UIS grade 4.

• 1998-01 - Germán Yáñez Mendoza, Edsel Rios del Rios, Christian Thomas, Claude Touloumdjian, Bernd Birnbach, Yair Azubel, Christophe Le Maillot, Fred Devos

  Exploration and survey (Mafia Maps). Surveyed passage to date: 16,917 ft.

• 2001-01 - Fred Devos

Caves

• Actun Koh
• Bear's Den
• Cabeza Azteca
• Cénote cultivé
• Cueva Seca
• Foxhole
• Overpass
• Pakal Nah
• unnamed cenote NE of Overpass, W of Teens
• unnamed cenote SW of the Down Loop (X)
• unnamed cenote W of Overpass (line end)
• unnamed cenote W of Overpass (off the line)

All the cave systems of the Yucatán