Palawan's charm, although difficult to penetrate with thick jungle mountains and strikingly sharp limestone rock faces, boasts of ecotourism sites such as: El Nido and its towering marble
cliffs and white sand beaches; the Underground River in Puerto Princesa where tourists can take a boat trip under limestone
cliffs and sepulchral chambers
along a subterranean river; Cayangan Lake in Coron, a hidden lagoon where you
scramble uphill to a dazzling volcanic lake; and the Tubbataha Reef Marine Park.