Yesterday whilst shivering waiting for something just beneath the climb & awkward tube at the bottom of the Cow Pot shakehole, I noticed that there are two distinct beds of limestone at that location. The lower one is paler and more creamy coloured; the upper one is darker and more grey coloured.
Does anyone know why, or have any references to literature about the different limestones in that area?
Ta.
Does anyone know why, or have any references to literature about the different limestones in that area?
Ta.