Trollabhal is a Graham of 702 m in Highland. All four of its nearest neighbours are higher, up to Sgurr Dubh Mor at 944.1 m.
It is one of only three register hills in the Canna, Rhum and Eigg region, with Askival and Ainshval. It shares its height of 702 m with Beinn Fhada (Argyll and Bute), Bowscale Fell and Barrslievenaroy. On the Grahams height ladder it sits between Beinn Fhada (Argyll and Bute) (702 m) and Sgurr nan Cnamh (701.8 m). The higher hill nearest to it, Ainshval, is a Corbett, 0.9 km to the south. The key col is close by, only 0.4 km to the south at 513 m. Its other name is Trollaval] [Trallval. The highest point is recorded as rock in turf, not a cairn.