The hill is the site of a hill fort commonly classed as a member of a group that also includes Craig Phadrig and Knock Farril to the west and Tap o' Noth and Dunnideer to the south east. These are characterised as massively constructed oblong forts, commonly exhibiting evidence of vitrification. The remains of the fort are now heavily mutilated and defaced and have been damaged by the building of the tower and mausoleum; by erosion from the provision of access roads; by root damage, animal burrowing and slope wash.