| Location: Puerto Princessa, Palawan, Philippines |
| Here’s the format – one guide paddles eight people with no paddles 1.5 kilometers each way, 3K round trip. Currents are minimal. Even though the ceiling is high, everybody wears life vests and hardhats. The ceiling is so high it’s difficult to hit your head, but the cave is so long – and wide – the life vests are a good idea. |
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