NatureSabang
Puerto Princesa Underground River
best Dec–May
A UNESCO World Heritage site and New7Wonder of Nature — a subterranean river winding ~8km through a cathedral-like limestone cave of bats and strange rock formations, about 4.3km of it navigable by paddle boat. There's a strict no-permit-no-entry rule and a cap near 900 visitors a day, so book your dated slot days ahead (a month out in peak summer).
Going? The planner prices every way into Puerto Princesa — planes, ferries and buses side by side.
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