Rob Roy No description specified. 1-9 (9 Records) Documents The A-frame (2006) Calculating the weight of a stone (2006) How to find true north (2006) Laying out a circle without using the center (2006) The lever (2006) Moving stones at Earthwood (2006) A Neolithic Love Affair (2006) Rings or circles? (2006) Rollers and stoneboats (2006)