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Uluwatu Beach Cave is a fantastic little spot with a grotto style cave entrance and a series of quaint restaurants sitting atop cliffs with a great view of the sunset and surf. Along the south peninsula, this was the beach I most enjoyed. Not as busy and teeming with tourists as other beaches, it still provided a calm atmosphere to soak in the the view from the pleasant restaurants scattered along the cliff face.
The cave is really quite cool and its interesting to think about the forces that must have carved it out over the millenia. You descend to the sandy beach by a staircase winding into the yawning grotto. Once you get to sand level, the cave stretches around and above you for a surreal sensation as you can still see the open sky above. From the sand, you can either mount another staircase through the rocks to a very cool above ground lookout point, or you can follow the beach to the water where you have many options to swim and explore.
The surf here is also pretty sick. Though the swell was down in most places, the waves were still working here, whereas at Padang Padang and Dreamlands, the surf was entirely too flat to ride. It is a reef break here, but it looks like the reef would be fairly deep down if you come here at high tide. The waves definitely dropped down at low tide. Didn't look like a very predictable break, but there were definitely some guys out catching some action.