Tee Lor Su in Karen language means the black waterfall or the great, awesome waterfall. It proves to be the right name since this waterfall runs fiercely and is amazingly grand, especailly in rainy season. Originated from a stream called Huai Klo Tor, Tee Lor Su Waterfall is about 900m above average sea level. It is 500m wide and runs down in steps approximately 300m high. Surrounded by lush green forest, the waterfall has altogether 3 levels. The lowest level is a vast rocky ground where ones can relax and walk around, the second level is a grand yellow limestone cliff covered with a curtain of water running down to the emerald green pond, whereas the third or the highest level is simply inaccessible for visitors due to the very strong current.