Approach notes

As for Cwm Silyn until it is possible to drop down and cross between the two lakes. Follow the path which eventually goes up to Bwlch Tros Ben passing some small shallow lakes.but where the path starts to climb, drop down into the next cwm.

For the Infinity boulder park in the lay by opposite the lake then head through the gate and up the obvious path that leads you in to the cwm, the bloc is visiable at the back of the cwm.

 

Video showing most of the problems: https://youtu.be/-QCgCeIdZzw