Joolis system
Area: Chemuyil
Length: 5,909 m
Maximum depth: 24 m
Exploration
2002-2004 - Miloslav Dvořáček, Radoslav Husák, Daniel Hutňan, Michal Megela, Zdeněk Motyčka, Radek Jančar, Bil Phillips, Robert Schmittner, M. F. Silva
Explored and surveyed. Czech Speleological Society, QRSS. Length 3,580 m. Digitised by GEODIS BRNO.
2008-11 - Czech Speleological Society