Gomantang Cave--- which is between Lahad Datu and the Kinabatangan....a big source for bird's nest for the Chinese market...the rope here is one of the ones they climb to get the birds nest very big climb and interesting.....but.....ABSOLUTLY DISGUSTING!!!! with tons (literally) of bat guano and cockroaches Paths are slip and slide on the guano and railing same.....yucky!!!!