It is a compact settlement above the left bank of the Ljubljanica River between Zgornji Kašelj and Zalog.

[3] Kašelj Hill (Slovene: Kašeljski grič) rises east of the settlement, across the Ljubljanica River.

Below the hill to the north, Spodnji Kašel extends to Cold Valley (Mrzla dolina), so called because the winter snow lies there late into the spring.

In Cold Valley there is a plaque next to an old bunker commemorating four Partisans that were killed by Anti-Communist Volunteer Militia forces on 16 April 1943.

[1] Spodnji Kašelj was annexed by the City of Ljubljana in 1982, ending its existence as an independent settlement.