In the Know: Puerto Princesa Subterranean River National Park

Location: About 70 kilometers northwest of Puerto Princesa, Palawan

Features: World-renowned cave system, limestone karst landscape, underground river

Length of underground river: 8.2 km

Length of tour: 1.2 km

Location of serenia: 1.5 km from mouth of cave

Total area: 22,202 hectares

More than 800 plant species, including almost 300 trees, 195 bird species, 30 mammals, 19 reptiles and eight bat species call this area home.

Distance of the location of the Sirenia fossil remains from the cave entrance: 1.5 km.

Sources: itsmorefuninthephilippines.com, ppur.com.ph, Unesco.org

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