The Loch Ness Monster is a cryptid that reputedly inhabits Loch Ness, a lake in the Scottish Highlands. It is similar to other supposed lake monsters in Scotland and elsewhere, though its description varies from one account to the next, with most describing it as large. Popular interest and belief in the creature's existence has varied since it was first brought to the world's attention in 1933. Evidence of its existence is anecdotal, with minimal and much-disputed photographic material and sonar readings.