Underground river

Here's what to know before you head to Rio Secreto, the massive underground river that flows beneath the jungle of Riviera Maya in Mexico’s state of Quintana Roo.

A 5-day trek through Hang Son Doong, the largest cave in the world. Located in Phong Nha-Ke Bang National Park in the Quang Binh province of Central Vietnam

Get to see a unique place on earth in this underground river. Read about my adventures wandering and swimming through the stalactites and stalagmites of Rio Sec

There are cave tours and there's Slovenia's Postojna cave system where you abseil into underground rivers in search of prehistoric beasts. Nick Redmayne braces himself

Palawans Underground River

“༺💙༻Hᴀᴘᴘʏ sᴜɴᴅᴀʏ༺💙༻”

A river rushing through an underground cave towards the sea

Puerta Princessa underground river is one of the unique landmarks in the Philippines. Within the Puerto Princesa park lies a hidden river, which flows underground and much of the park’s landscape sits on a limestone bed. The river runs through the limestone and directly into the sea, making parts of this subterranean river tidal.

Fantasy Underground River