Phnom Chhnork Caves
These limestone caves shelter a pre-Angkorian Hindu ruin (before it was Buddhist, the Khmer empire was Hindu), over which the stalagmites and stalactites are gradually growing. The less appealing cave of Phnom Sia (flashlight required) is mostly about exploring in the depths of a cave but the white elephant cave, or Cave of Sasear, has a shrine where worshippers pray to an elephant-shaped limestone formation. Tuk-tuks from town cost around $10 for the round-trip. Locals will ask $4 to guide you into the caves.
