Only 125 metres over the hill from the Bunkhouse, it seems like a world away, as you come upon a truly awesome sight; a Celtic Iron Age Roundhouse. The Roundhouse is Marthrown's "Jewel in the Crown". It's an amazingly atmospheric wedding venue, a perfect party venue and has stunning vista's all around. It's one truly magnificent setting, whatever the occasion. As an added bonus the state of the art composting toilet, hot shower and fully equipped cooking shelter add "five star" Iron Age facilities.!