CHUR, Switzerland, May 22, 2012 /PRNewswire/ -- The longest hiking film in the world Now everyone can experience the most spectacular hike in Switzerland

INTERLAKEN, Switzerland, January 2, 2012 /PRNewswire/ -- - Cross reference: Picture is available via epa european pressphoto agency and can be downloaded free of charge

For years, geologists have argued about the processes that formed steep inner gorges in the broad glacial valleys of the Swiss Alps.

The world's longest tunnel was started on Friday using a giant drilling machine to help clear a path deep beneath the Swiss Alps.

Mountaineers are bringing back firsthand accounts of vanishing glaciers, melting ice routes, crumbling rock formations and flood-prone lakes where glaciers once rose.