The Mulu National park in the Sarawak province of Malaysia has some great features, among which some amazing caves. I am not big on caves, as I am claustrophobic, but I ventured into the wide Deer cave. This cave is famous for the thousands of bats that rest here and fly out almost every night to hunt for food. During the day you can explore the cave, although you will encounter lots of bat guano and the inevitable smell that comes along. Looking back at the entrance of the cave, you can see the face of Abraham Lincoln. The wonders of mother nature!