Robot finds 'monster' in Loch Ness _ but it's a movie prop

An underwater robot exploring Loch Ness has discovered a dark, monster-shaped mass in its depths. Disappointingly, tourism officials say the 30-foot (9-meter), object is not the fabled Loch Ness Monster, but a prop left over from a 1970 film. Billy Wilder's "The Private Life of Sherlock Holmes" puts the great detective on the trail of the monster -- which turns out to be a disguised submarine. A model of the submarine-monster sank during production to the bottom of the 750 foot (230 meter) -deep lake. Tourism body Visit Scotland is backing a survey of the Highlands lake by a marine robot to study its depths and see if there is any sign of the fabled monster, which helps attract hundreds of thousands of visitors a year to the region.