Route to and from Barnahowna from north east. Parking is in a farm yard at the end of a valley (with permission) at M030 695, Steep climb out of the valley, followed by a punishing 4k each way over only gently rising, but very contorted ground.
This is essentially a huge remote and very wet plateau, where water alternates with bog and rock continually. There are many more lakes than indicated on the OS. There are also a fair number of cairns, including at least 5 on this route.