We made a visit to the "Fish Cave" in the Mae Hong Son Province on our way to Mae Hong Son from Pai. The "Fish Cave" is a cave with a stream flowing out of it (it flows under a mountain and out the cave) where hundreds of large Carp fish swim furiously trying to get into the cave. It is a phenomenon that nobody seems to understand.. Our guidebook said nobody knows why and the information around the park offered no answers either.

The top photo is looking down into the stream inside the cave. It difficult to make out the fish but I can assure you they are there.

The bottom photo is of Aaron checking out the fish downstream from the cave about 200 meters.