The most striking aspect of the Clonbur Woods habitat is the limestone pavement landscape that borders Lough Mask, and we will spend some time there on our walk on Sunday.
There are very unusual patterns in the rock – it is the result of the limestone dissolving due to the water being saturated with calcium carbonate. There’s a German word for everything, and Röhrenkarren describes the tube-shaped patterns caused by the chemical effect of the dissolving limestone.
The definitive paper on Röhrenkarren was written by Michael J Simms and describes the landscape that we will visit on Sunday. You can find the paper here (pdf).