Underground Adventure: Spelunking Video -- National Geographic

Underground Adventure: Spelunking Video Take an exhilarating journey to the deep, dank, dark depths of the Earth, and discover why so many are addicted to the adventure sport of spelunking. You might be next.Welcome to the National Geographic video player.Video Sections

Science & Space Video - Watch a video about science, the human body, and the solar system, and see other science and space videos from National Geographic.

Earth - Watch videos about Earth, landforms, and forces of nature, and see other videos from National Geographic.
- Antarctic Ocean - The coldest, windiest place on Earth holds 60 percent of the fresh water on the planet. Recent expeditions to the Weddell Sea produced more than 700 new species, including giant carnivorous sponges.
- Arctic Ocean - Crowning the top of the world, the frozen Arctic Ocean provides an unlikely home for a spectrum of enchanting creatures. Above the ice and below, beluga whales, narwhals, bowhead whales, walruses, and murres prosper.
- Bermuda - The waters around Bermuda host a liquid jungle of creatures that exist in floating forests of golden brown sargassum seaweed. Deep within its waters live bioluminescent deep-sea creatures, reminiscent of comets, suns, and stars.
- Carlsbad Caverns - At New Mexico's Carlsbad National Caverns, the main event is the fantastic rock formations on the walls, ceilings and floors. But to find another of the attractions there, you have to travel the equivalent of 70 stories below the earth's surface.
- Climate and Weather - Where does climate stop and weather begin? And which is to blame when Mother Nature turns violent? Learn what makes nature unleash her fury and what you can do to protect yourself.
- Coober Pedy - In Australia's outback, hardy prospectors search for a fortune in opals.
- Exploring Kartchner Caverns - Join a team of explorers as they descend into the depths of Arizona's Kartchner Caverns. Discover how a slow drip of water built this cave over eons, and why researchers say it's "alive."
- Galapagos - The Galapagos was Darwin's laboratory for the study of the origins of life. See the amazing creatures he studied in 1835—giant tortoises, sea turtles, flightless cormorants, iguanas, and penguins.
- Great Barrier Reef - The largest living structure, the Great Barrier Reef spans more than 1,200 miles (2,000 kilometers) of islands and submerged reefs. A plethora of coral thrives here, along with a sweep of parrotfish, surgeonfish, barracuda, and sharks.
- Gulf & Caribbean - The mix of moonlight, tide, and temperature triggers an extraordinary explosion of life in these waters. When the conditions are just right, divers can witness the reproduction of corals, snappers, yellowhead jawfish, and nurse sharks.
- Hawai'i - Created by a string of spectacular undersea volcanoes, the islands are surrounded by creatures whose ancestors preceded human beings by millions of years.
- Inside Howe Caverns - Six million years in the making, New York's Howe Caverns highlight the eerie beauty of underwater erosion. Get a front-row seat to one of nature's most exquisite works of art.
- Mediterranean Sea - The Mediterranean sea bed holds treasures from thousands of years of trade across its waters. Among the scattered shipwrecks, divers can also find rich coral reefs full of natural wonders, as well as the racing bluefin tuna.
- Monterey Bay - Monterey Bay boasts an undersea canyon that is deeper than the Grand Canyon. This rich environment is home to krill, Humboldt squid, mola mola, and a plethora of tiny animals that thrive in giant kelp forests.
- Oceans Overview - The ocean produces 70 percent of the Earth's oxygen and drives our weather and the chemistry of the planet. Most of the creatures on Earth live in the sea. But our knowledge of the ocean is far outstripped by our impact on it.
- Patagonia - At the Peninsula Valdez, a pod of orcas undertakes a daring dining ritual, risking beaching themselves to catch seals and sea lions. These waters are also home to Chilean sea bass, albatross, and Magellanic penguins.
- Sinking England - Along the coastlines of Britain, people are doing whatever they can to hold back the rising tide.
- Spacewalkers Assemble Robot - March 14, 2008—Spacewalking astronauts begin assembling Dextre, the space station's new robot.
- Speed Riding - Check out National Geographic Adventure Magazine's "Adrenaline Adventurer of the Year" Francois Bon! He's jumping off the world's highest mountaintops with skis and a parachute!
- Underground Adventure: Spelunking - Take an exhilarating journey to the deep, dank, dark depths of the Earth, and discover why so many are addicted to the adventure sport of spelunking. You might be next.
- Weather 101 - From heat waves and hailstorms to typhoons and tornadoes, our planet's weather can be intense. Learn what makes nature unleash her fury and what you can do to protect yourself.
- West Indian Ocean - Two of the world's swiftest currents connect off the east coast of Africa, creating some of the richest biological areas of the sea. This ocean is home to the legendary coelacanth fish.
Earth - Watch videos about Earth, landforms, and forces of nature, and see other videos from National Geographic.
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Prehistoric World - Watch videos about the dinosaurs that ruled the Earth for more than 160 million years, and see other videos from National Geographic.
Space - Watch videos about space, space exploration, and the solar system, and see other videos from National Geographic.
Technology - Watch videos about science, technology, and engineering, and see other videos from National Geographic.
Weird Science - Watch videos about weird science, strange animals, and unusual phenomena, and see other videos from National Geographic.

Animals Video - All the beauty and excitement of the animal kingdom comes to you in thrilling footage of lions, sharks, squid and more.

Daily News Video - See the latest videos or breaking news from researchers and explorers in the field as they make the discoveries that shape the way we see the world.

Environment Video - Get an in-depth look at the constantly changing Earth, from natural disasters like volcanoes and tornadoes, to global warming and other effects of climate change.

Kids Video - Wild, creepy, cute, and slimy animals from puppies and lions to lizards and snakes all do thier amazing things and we catch it all on video.

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Science & Space Video - Watch a video about science, the human body, and the solar system, and see other science and space videos from National Geographic.

Specials Video - Watch thrilling trailers and clips from events like the annual National Geographic GeoBee to the release of new giant-screen films.

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