Fire, steam, red hot stones, and a subtle hint of wee. Mark Stephen gets into hands-on history as he joins the Bressay History Group to find out how Bronze Age people dyed fleeces in an ancient set-up called a burnt mound. It's not without its dangers of exploding stones, scalding water, stinging nettles and the 'ewwwww!' factor of just what you steep the wool in. Mark also explores a remarkable shaggy dog story of the Whalsay fishermen blown out to sea in an open fishing boat - did they really get to Philadelphia? Find out in Past Lives.