Alteen is bounded on the north by Greenan townland, on the west by Aghatirourke, Beihy, Commas (Kinawley), Dunmakeever and Gortalughany townlands and on the east by Cloghoge, Corranearty, Moheranea and Monydoo (or Tonycrom) townlands. Its chief geographical features are Cuilcagh mountain which rises to 2,188 feet above sea level, Lough Cam (Gaelic meaning- ‘The Crooked Lake'), Lough Cratty (Gaelic Loch Cruite meaning- ‘The Lake of the Hill Summit') (A tale about treasure in the lake is found in the 1938 Dúchas folklore collection.), Polladranta Pool, Pollprughlisk Cave System (Gaelic Poll Phrochlais, meaning ‘The Hole of the Badger's Cave'), mountain pools, mountain streams, underground waterfalls, underground streams, river swallowholes, a sheepfold, a stone quarry, an abyss or ‘Sumera', rocky outcrops, dug wells and forestry plantations. Alteen is traversed by minor public roads and rural lanes. The townland covers 1,149 statute acres.