The mountain mass consists mainly of
paleogene flysch, with smaller amounts of lower flysch and
limestone, resulting in a complex tectonic structure. Above heights of , various glacial features such as cirques and glacial valleys can be observed. The western and northwestern slopes of the mountain give rise to various branches of the
Osum and
Devoll rivers. Conversely, the northeastern and southern slopes are drained by the branches of
Aliakmonas and
Sarantaporos rivers. ==Biodiversity==