Thursday 5 July 2012: Pentre Ifan Burial Mound
This stone is held aloft purely by the power of people photographing it. There is a law that every publication on Pembrokeshire must have at least one picture of these stones in it - ideally two or three.
It is, by the way, one of the most peaceful spots in the UK if you find yourself there alone.
It is almost impossible to make a satisfactory photo of.