Khao Bin (ถ้ำเขาบิน) is a cave in Ratchaburi Province. It is reached on highway 3087, which branches off from Phetkasem highway to the west near the town Ratchaburi.
The name Khao Bin means "Flying dove", which refers to the rock formation depicted to the right which with some fantasy resembles a flying dove. The cave has many stalactites, though some broken by stupid tourists, and also some parts of the cave roof darkened from the times before electric lights. But overall it is definitely a very beautiful cave.
In the centre of the cave is a small pond revered by the people, but sadly my camera lens was fogged over due to the high humidity in there, so I could not take a photo there.