A British bookmaker offered a one million pound ($2 million) reward on Monday to anyone who can prove that Scotland's legendary Loch Ness monster does actually exist.

Bookmakers William Hill are supplying up to 50,000 instant cameras to fans attending a Loch Ness pop festival next weekend.

"We are hoping the one million pound bounty will help to solve one of the great enigmas of modern times," William Hill spokesman Rupert Adams said.

The winner will have to offer proof that satisfies experts at London's Natural History Museum.

The bookmakers are confident the bounty will not be claimed at the Rock Ness music festival on June 9 and 10 -- they are offering odds of 250-1 about it happening in 2007.