While searching for new places to swim and explore, I came across Drew's Weir and the Salmon Leaps near Castle Drogo in Chagford. I sort of skipped over it to start with, but then an old school friend posted pictures of him swimming there, which peaked my interest a bit.
We often swim on Dartmoor, usually at Spitchwick, so I know how lovely it can be to swim in the middle of nature with no cars and very few people around. I also know what it's like to swim in very cold water, which is always what you get when swimming in Dartmoor rivers.