There are many tinner's huts within Dartmoor and they were used by tinner's living away from home in the more remote parts of Dartmoor, both as shelters and for storing tools. This one, near the source of the River Avon, is not a scheduled monument and no specific details can be found for it. Most tinner's huts on Dartmoor are unhelpfully dated as either medieval (1066 to 1540) or later, although the method of tin extraction known as streaming or streamworking was at it's peak between the 12th and 15th centuries.
I have rated this cache as Terrain 4 as it is located in about the most remote part of Dartmoor's south moor. It is surrounded by various mires and there are no nearby paths that can be used for access.
The weather on Dartmoor can change suddenly and unexpectedly and ALL types of weather conditions can be experienced. Please ensure that you have the correct clothing and map & compass (and know how to use them). Please do NOT rely solely on your GPS.