The Municipal Unit of Ithomi does not include a community named Ithomi but is named after Mt. Ithome, the central geographic feature visible everywhere in the territory. The latter extends from west of the mountain through the valley to the east to and including the Mavrouzumena River, a tributary of the Pamisos River. The confluence is on the east of Aristodimio. North of there the Pamisos is totally controlled, running between straight dikes. It is not shown on many maps; instead the Mavrouzumena is portrayed as the upper Pamisos. The communities are small. The land is given mainly to agriculture, arboriculture and viticulture. The Mavrouzumena flows from north of Ithome more or less in its natural configuration, except that it is dammed just below Valira.