The Iron Age fort site atop Pirn Hill in Caberston forest is just one of several similar sites spread across the Tweed Valley, which afforded ancient inhabitants some protection and means of early warning in times of trouble. Today the hills offer excellent waymarked trails and the same fantastic views.
The most popular walk here involves a circuit around Pirn Hill, which can be extended to take in the 2000 year old Iron Age settlement site on its summit. Seven carved sandstone sculptures, by local artist Mary Kenny, depicting the history of nearby Innerleithen and the hill, can also be found by the summit.