Tunnel Creek is beautiful to walk through. It is inhabited by bats amongst other things, as can be seen here. At least five species of bats live in the cave, including ghost bats and fruit bats. They don't like light being shone on them, and start scrreching when one does.
This is the halfway point of the El Questro Gorge trail, with a beautiful swimming pool as seen here. It is a quite challenging walk over broken rock and the riverbed, but well worth it.
