#2
Palawan
Stretching 450 km through the Sulu Sea in the Philippines, Palawan spans 14,649 sq km and shelters the Puerto Princesa Underground River — a UNESCO World Heritage Site navigable for 8.2 km by boat beneath a limestone karst mountain. El Nido's 50 islands offer hidden lagoons, white sand beaches, and one of Southeast Asia's richest coral reef ecosystems.
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