Mondowa Guh is the longest known cave in Myanmar. It is situated in the Taunggyi area of Shan state.
The entrance is a temple, but beyond this is a 'wild' cave. The cave is on 2 levels, connected by short pitches. The upper level is an extensive fossil passage. Below this is a river passage. The downstream passage ends in a sump. Note there can be high levels of CO2 in the upstream river passage. The cave is 1770 m long.
Bence, P.; Guillot, F. & Maifret, St. (1998) : Le Myanmar (Birmanie) et l’Etat Shan. – Expedition Report, 34 p.