The Scots pines found along the western cliff (Touchadam Craig) of Gillies Hill are relicts of an ancient pinewood supported by presence of the fungal species Russula integra var. integra. This ten hectare section of the hill extends from the old quarries in the north to Wallstale Dun in the south and includes the North and South Pincers, the arms of whinstone which visually hide the more recent quarry operations. In addition to the Scots pines on Touchadam Craig, four others found elsewhere on the hill including the 5th, the 10th and the 11th largest Scots pines in the UK, are currently registered with the Woodland Trust's Ancient Tree Hunt project. These and the ~50 other pines display a significant pinewood in the Stirling Council region.