Ben Lawers (Gaelic: Beinn Labhair) is the highest mountain in the southern part of the Scottish Highlands and the 10th highest mountain in Britain. It lies to the north side of Loch Tay, and is the highest point of a long ridge that includes seven Munros. Ben Lawers was long thought to be over 4,000 feet (1,219.2 m) in height; accurate measurement in the 1870s showed it to be some 17 feet (5.2 m) short of this figure. In 1878, a group of twenty men spent a day building a large cairn in the hope of bringing the summit above the "magic" figure.