Geograph - photograph every grid square

This interesting little gorge is on the northwest side of the A708 near Birkhill. It is named after Halbert Dobson, who along with fellow Covenanter David Dun, made a small cave near the top of a waterfall in the branch to the left to hide from Government troops in the 17th century. For a view of the waterfall, see NT1915 : Dob's Linn Waterfall. Dob’s Linn is famous for Charles Lapworth’s 19th century geological study of graptolite fossils in Ordovician and Silurian shales that led to the unravelling of the stratigraphy and structure of the Southern Uplands.