All this relates to another of my abiding topographic obsessions: ancient trackways, particularly Roman roads, but also prehistoric and mediaeval ones. It turns out (thanks to an excellent book I’ve got from the library, The Roads and Trackways of Wessex) that the ancient road running across White Sheet Hill, about 8 miles from Warminster, and one I’ve often wanted to walk at greater length, is part of the pre-Roman Harroway, which allegedly ran from Kent to Cornwall. You can certainly walk many miles of it in my area scarcely touching modern roads, There are numerous milestones dating from the 1750s along this stretch. Must explore it more soon, although it will be an ambitious walk, so a greater level of fitness might be required…