 The southwestern extremity of the Slieve Bloom range just touches Tipperary at Roscrea.The valley in which Roscrea stands separates this end of Slieve Bloom from the Devil's Bit range, which begins immediately south of the town and runs southwest.This mountain has a singular gap in its contour (very conspicuous from the railway), from which it was formerly called Barnane-Ely, i.e., the gapped mountain of Ely (the old territory in which it was situated), which is still the name of the parish.