In pictures: Loch Ness Monster hunters in the 1970s
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A new documentary explores efforts made in the 1970s to find the Loch Ness Monster.
The 90-minute film, Loch Ness: They Created a Monster, has been made by three-time Scottish Bafta-winner John MacLaverty.
It will be shown in UK cinemas from Friday, and includes archive footage and images.
During the 1970s, different groups of people sought to explain Nessie sightings.
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Earlier this year, the biggest attempt in more than 50 years was made to solve the mystery.
About 200 volunteers kept a lookout for strange events from the shoreline, but spotted nothing unusual.
Observers on a boat using acoustic equipment reported four unidentified "gloops" but then realised their recording device was not plugged in.
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