Video Links

Aquifer Education – Videos
From Edwards Aquifer Authority
http://www.edwardsaquifer.org/aquifer_education/videos
Check out a series of videos about the Edwards Aquifer in Texas. Drop inside the Edward Aquifer and explore an unfamiliar world or go on an adventure with Doc Edwards and his Aquifer Explorers. 

Cave Formation: Biogeochemical Cycles
From PBS Learning Media
http://rmpbs.pbslearningmedia.org/resource/ess05.sci.ess.earthsys.cavebiogeo/cave-formation-biogeochemical-cycles/
The most common process by which limestone caves form involves carbonic acid—or weakly acidic groundwater—as the primary agent. When carbonic acid contacts limestone, it dissolves minerals in the rock. If enough water to saturate the rock is present over a long time period, cavities and entire underground cave networks can form. Recently, a radical new theory has been proposed that identifies another cave-forming agent: sulfuric acid. This video segment adapted from NOVA identifies the mysterious source of the sulfuric acid, which, unlike carbonic acid, does not readily form in nature.

Cave Formation: Kane Cave
From PBS Learning Media
http://rmpbs.pbslearningmedia.org/resource/ess05.sci.ess.earthsys.kanecave/cave-formation-kane-cave/
At first glance, Wyoming's Kane Cave exhibits few characteristics of the world's most picturesque caves – it lacks mineral deposits, including stalactites and stalagmites, which decorate most cave ceilings and floors. Although the cave is not small, it pales in size against more massive ones, like those of New Mexico's Carlsbad Caverns. However, it is not its size that draws scientists to Kane Cave, but another compelling aspect of the cave. In this video segment adapted from NOVA, watch as scientists conduct a simple experiment to determine whether microbes that inhabit the cave could actually be contributing to the cave-formation process.

EONS Inner Space Cavern Film
From Inner Space Cavern
https://www.youtube.com/watch?v=36NOMr2ARu0
Watch amazing video of from Inner Space Cavern in Texas.

How Caves Form
From PBS
http://www.pbs.org/wgbh/nova/earth/how-caves-form.html
Watch as rainwater, waves, lava, and bacteria create four different types of caves.

Ice Caves of Lake Superior
From Into the Outdoors
http://intotheoutdoors.org/topics/ice-caves-of-lake-superior/#available-lessons
The steep sandstone cliffs along Lake Superior have been weathered by wind and waves for millions of years. In some places, this erosional action has formed caves in the rock. When winters become especially cold, ice can fill the caves and create a place begging to be explored. Watch the Serious Science video to discover nature's secrets about these fascinating features.

Luray Caverns on “What in the World?” (5:38)
https://www.youtube.com/watch?v=lYkx9u-HykE
Luray Caverns as seen on the kid's show "What in the World?"

Mammoth Cave Geology Formation (1:00)
From International Mapping
https://www.youtube.com/watch?v=HYV6gBssMFs
International Mapping worked with the National Park Service and Argentine Productions to produce an exhibit explaining the formation of Mammoth Cave, the most extensive cave system in the world. The Green River cut through a layer of resistant sandstone to the softer layers of limestone underneath. Water then started flowing through the slightly angled limestone layers to reach the new river level. This water dissolved the cave passages along the first layer and then along subsequent layers as the river continued cutting deeper and deeper.

The Physics and Chemistry of Karst Topography
From Into the Outdoors
http://intotheoutdoors.org/segments/the-physics-chemistry-of-karst-topography/
Learn how limestone caves are formed and how the process can impact drinking water.

Partners

USDA Forest Service Prince William Network Cave Research Foundation National Speleological Society Cave Conservancy of the Virginias Cave Conservancy Foundation Indiana Karst Conservancy National Cave & Karst Program, United States Forest Service Project Underground Natural Inquirer National Caves Association National Cave and Karst Research Institute National Park Service Under Earth Images FSNatureLIVE: Distance Learning Adventures