Puerto Princesa underground river national park is the new 7 wonders of Nature. Inside the cave would cover the first kilometers of this 8.2 km. underground river known to be the longest navigable in the world.
Puerto Princesa underground river national park is the new 7 wonders of Nature. Inside the cave would cover the first kilometers of this 8.2 km. underground river known to be the longest navigable in the world.