Cloichran

I came across this site a couple of days ago 320 M od above Loch Tay 5-600 metres from various marked rocks . about 7-8 metres across ,banks are 2- 2.5m high ,entrance at the south 0.8 m immediatley above what is now a very damp area nearest water course these days is 50 m away . I thought it may be a burnt mound ,there are none recorded for miles .Any thoughts ?