Another single rock.

This end of a wall breaks some of the traditional rules. Here I stood a large rock on top of a large flat base. This worked only because the base of the upright was large enough not to move. However it did have a curved bottom which required small wedges at the front edge. These had to be carefully chosen to ensure that they would not be crushed by the weight above them.
Entry on 6th December shows a wallend on the Isle of Skye.