The Clach Glas is not too far from the embankment for the railway on the flood plain of the Tay. It is around 1.7m tall by 1.0m wide, and is approximately 30cm thick, making it slab-like in appearance. It stands on a small but pronounced mound in which packing material is visible, and there was said to have once been more stones lying on the ground to the south and east, although these are no longer there. In the centre of the south face of the stone are two cup marks.
Directions - Head north from Perth on the A9. Turn off at Kindallachan and park here. Walk north out of Kindallachan, taking the path that follows the A9. When you see the first cottage on the opposte side of the A9 (Haugh of Kilmorich) cross the road and head down the track that goes under the railway bridge towards the river. Turn right along the bottom of the field, and then right again up the other side of the field. The stone stands in the corner of the next field, near the railway embankment.