Ashdow, a narrow, winding, picturesque ravine in the W of Killearn parish, Stirlingshire, in the course of Carnock burn, 3 miles SW of Killearn village. It occurs in red sandstone rock, is about 70 feet deep, has the closeness and the obscurity of a chasm, and is wildly adorned with overhanging woods.

(F.H. Groome, Ordnance Gazetteer of Scotland (1882-4); © 2004 Gazetteer for Scotland)