The Gomantong Caves are an intricate cave system inside Gomantong Hill in Sandakan Division, Sabah, Malaysia. The hill is the largest limestone outcrop in the Lower Kinabatangan area.
Wikipedia https://en.wikipedia.org/wiki/Gomantong_Caves
More information on Sabah tourism board website http://www.sabahtourism.com/destination/gomantong-cave
Address Malaysia
Coordinates 5°31'50.428" N 118°4'18.916" E