A basalt plug which is the only remaining evidence of the volcano which existed on this site 330-340 million years ago.
The relationships between the Dalradian block and the Midland Valley; details of the structure and stratigraphy of the Highland Border Complex; recumbent folding in Upper Dalradian rocks.
Stratigraphy and sedimentation of the Lower and Upper Devonian; the angular unconformity which separates them.