The valley's floor is filled with river sediments, and its slopes are made of Paleozoic, Jurassic and Cretaceous rocks.

The northern and middle parts are drained by the Makotsevska reka, and the southern — by the Azmak, both right tributaries of the Lesnovska reka, itself a right tributary of the Iskar of the Danube basin.

[1] The valley is located in Sofia Province, on the territory of Gorna Malina Municipality.

There are seven villages — Gorna Malina to the west, Negushevo to the northwest, Osoitsa to the north, Sarantsi, Chekanchevo and Makotsevo to the east and Belopoptsi to the south.

From west to east between Gorna Malina and Sarantsi the valley is traversed by an 8.5 km stretch of the first class I-6 road Gyueshevo–Sofia–Karlovo–Burgas.