This attraction is very near the killing caves, so it is best to do the killing caves in the late afternoon so that you don't make a second trip back for the flight of the bats.
The flight of the bats is impressive. It's hard to imagine that so many live in the cave. Seriously a stream of bats leaves the cave for 30+ minutes. However, due to fading light you can only watch the first 10 minutes of the flight before it's too dark too see the bats anymore.
Overall, a neat thing to see, but not worth a special trip there. Best to couple the site with the Killing Caves.
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