Whiteadder Reservoir is situated deep within the heart of the Lammermuir Hills in East Lothian.
The reservoir was created as an additional source of drinking water for the county but after work was completed in 1968 it become a haven for wildlife as well as a popular location for fishing and water sports.
One of the best ways to experience Whiteadder Reservoir is by walking a circular route around Priestlaw Hill which borders the body of water on its southern side.