Mysterious & Massive World Hidden Underground: Paradise & Fairytale Caves

Động Thiên Đường -- Paradise Cave at Phong Nha-Ke Bang National Park - Vietnam

Phong Nha-Ke Bang National Park contains the oldest major karst area in Asia. Protecting those caves is the reason for the park and also why it was named a UNESCO World Heritage Site. This cave is called Thien Duong (Động Thiên Đường) and is over 19 miles (31 km) long. The British cave explorers were so impressed by the beauty of the rock formation inside the cave, they dubbed this place as “Paradise Cave.” Photo #1 by Vo Thanh Lam

Okumaya devam et

Whitewater Adrenaline Rush: Extreme Kayaking [45 Photos, 5 Videos]

A rocky kayak ride Great Falls Park just outside Washington DC

At Great Falls, near McLean, Virginia, the Potomac River builds up speed and force as it plunges over a series of steep, jagged rocks and flows through the narrow Mather Gorge. It’s considered so dangerous, that ironically the National Park Service warns, “Swimming, wading, and entering the river in any manner are prohibited year round. Dangerous currents, rocks, and rapids make the river extremely hazardous.” Here’s an adrenaline junkie running a rocky kayak ride at Great Falls Park. Photo #1 by O Palsson

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Amazing Cliffs of Norway: Adrenaline Junkies’ Paradise [33 PICS]

Preikestolen, Norway

Preikestolen cliff goes by many names. The massive cliff is 604 meters (1982 feet) above Lysefjorden, Norway. Photo #1 by Arjan Veen

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