The historian John O Donovan (1834) states that the indigenous population called the mountain Bel Mor Muintir Pheodachain .

Geologically dominated by limestone, outcropping of the sedimentary rock forms extensive sheer cliffs near the summit.

Chemical erosion caused by the natural acidity of water has formed a cave system underneath the mountain, accessible at the village of Boho.

Agriculture is limited due to the steep slopes and thin peaty soils on Belmore, however extensive plantations of coniferous forest can be found on the upper plateau.

In 1894, archeologist Thomas Plunkett excavated both the Eagle’s Knoll Cairn passage tomb and Moylehid ring cairn in the townland of Moylehid; one of which is situated on an eastern spur of Belmore Mountain overlooking the Erne valley.