Ben Lawers () is the highest mountain in the Breadalbane region of the Scottish Highlands. It lies north of Loch Tay and is the highest peak of the 'Ben Lawers group', a ridge that includes six other Munros: Beinn Ghlas, Meall Garbh, Meall Corranaich, An Stùc, Meall Greigh and Meall a' Choire Leith. It is also the highest peak in Perthshire, and the tenth highest Munro in Scotland. Ben Lawers was long thought to be over 4000 feet in height; accurate measurement in the 1870s showed it to be . Ben Lawers lies on the watershed between the rivers Tay and Lyon. Since the 1950s, water has been captured from the numerous burns on the south face of Ben Lawers and Meall nan Tarmachan as part of the Breadalbane Hydro-Electric Scheme. The water is diverted to the Lochan na Lairige, from where it is piped to drive hydro-electric turbines at Finlarig on the banks of Loch Tay. The level of the Lochan na Lairige was raised by the construction of the 344-metre-long Lawers Dam, a buttress-type dam that is 42 m high. Due to the height of this reservoir the static head of water is 415 m, the highest available on any hydro-electric scheme in Scotland. Due to its high altitude and underlying geology Ben Lawers is home to an exceptionally rich selection of arctic-alpine plant species and habitats, and has been designated as a National Nature Reserve (NNR) since 1964. History There is much evidence of former settlements and other human activity on the southern slopes of Ben Lawers above Loch Tay. The fertile limestone and schist soils on these southern slopes have been farmed since very early times and there are many Bronze Age remains. The discovery of many boulders with cup and ring marks led Derek Alexander, an archaeologist for the National Trust for Scotland, to note that the Ben Lawers was likely to have been "a very significant landscape in prehistory." Overgrown tracks climb up the mountain from the valley to the peat beds and sheilings on the hillside, and there are ruins of cottages each surrounded by a small group of trees. These, along with the remains of ridged pastures, are signs of early cultivation. This evidence of habitation, and the presence of huts associated with transhumance at high altitudes, demonstrate that local people are likely to have visited most if not all of the