|"Troll bread" is my
favourite example of rocky erosion which is about as
geeky a phrase as you could get I guess.
This piece is about 15cm (6") high, they are quite
common in the right areas though not all so pleasing
of form as this particular piece.
They are the result of two separate but related
phenomena. The first is where a rock is split with
fracture lines along the same plane so producing the
parallel slices of "bread". The second is where the
same rock that is buried beneath the ground becomes
slowly pushed to the surface as a result of
countless freeze-thaw cycles. The result being
prominent sliced rocks.
copyright Paul Ward