From about 1766,
cattle droving was carried out on a large scale to move cattle from Scotland to England. Beef cattle from the far north and northeast of Scotland were driven through several passes through the Cairngorms, but particularly the Lairig an Laoigh, to reach
Braemar and then onwards south often to the
Falkirk Tryst where English drovers continued the journey. Droving died out in the late 19th century. As with other passes, there were castles near both approaches at
Kindrochit Castle and, later,
Braemar Castle and Castle Roy at
Nethy Bridge and where there also used to be agricultural dwellings. To the north of Derry Lodge is a point on the burn called Derry Dam. A sluice was built here early in the 19th century by Alexander Davidson who used it to help float timber down the glen. Further north the Lochan Uaine is in a high
corrie to the west where William Smith, an 18th century
deer stalker, wrote a poem which later became a well-known song "Allt an Lochain Uaine". ==Trekking routes==