The heat must have been indeed intense which could cause mica to disappear entirely, and feldspar to melt almost completely. The hill known as Ord Hill of Kissock is crowned, as is Craig Phoedrick, with ruins still standing, but the vegetation about them is so dense and thorny that it is difficult to make out the condition of the remains.

Craig Phoedrick is now covered with a luxuriant vegetation of broom, furze, and fern, with groves of firs and larches, amongst which the explorer makes his way with difficulty to the fortifications, or rather to the piles of massive blocks to which that name has been given.

The ruins, which can only be seen from one side, appear however to have formed part of fortifications, dating from the same time and serving the same purpose as those of Craig Phoedrick. Were they forts? There is certainly no sign of their having been used as habitations.

Vitrified cairns also occur in the Orkney Islands, notably on the little isle of Sanday, but the most interesting structures of the kind are Craig Phoedrick and Ord Hill of Kissock, which rise up like huge pillars on the hills at the entrance of Moray Firth, at a distance of three miles from each other.