The Jura's made of karst limestone and, in many places, riddled with holes. Luckily, hidden holes that surprise hikers are tucked away in the dark forests -- on the open pastures, where cows of economic value wander all about, there are far fewer holes, and those holes that remain are curtained all about with barbed wire and, sometimes, stone walls.
posted on Apr 19, 2005 - View this thread

The U.S. Army Permafrost Tunnel provides researchers a unique opportunity to study the composition and behavior of ice structures, ice-saturated soils and frozen bioorganics dating over 40,000 years before present.
posted on Apr 5, 2005 - View this thread