[2] Although relatively small (its height is 418 metres), the characteristic shape of the hill forms an important part of the distinctive scenery of the Stirling area, and it is often depicted (particularly in postcards and calendars) in combination with the nearby Abbey Craig.

On the summit of Castle Law the remains of an ancient hill fort, originally occupied by the Maeatae, are still clearly discernible.

This gulley was formed by the erosion of a fault, resulting from the juxtaposition of soft pyroclastic rocks on one side against harder andesite and basalt on the other.

[4] This has resulted in an area where hard andesite slightly overhangs, and is the darkest and least exposed part of the climb, which is not particularly difficult.

The third route is via Menstrie Glen from the east, and is a somewhat gentle ascent in the beginning, which steepens satisfactorily for those who like a decent climb, as the summit is approached.