Archival footage of dive with Don Walsh
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Archival footage of dive with Don Walsh

Don Walsh is 78 and the only person alive who has been to Challenger Deep -- at almost seven miles the deepest place in all the world's oceans. He tells the tale of the bathyscaphe Trieste's dive as if it happened last week, with the wonder of a man who has been to a mystical place. (Michael Ruane/The Washington Post/Photos and archival video courtesy U.S. Navy)

© 2010 The Washington Post/Photos and archival video courtesy U.S. Navy