Bosanska Krupa is a town between Novi Grad (former Bosanski Novi) and Bihać in North-Western Bosnia. It is lying on both shores of the Una river and its main feature is the medieval fortress which is dominating the town.
There are a few daily trains passing Krupa on their way between Novi and Bihać.
In underwater caves around Bosanska Krupa, presence of the Olm, a rare, blind cave salamander has been found. Cave-divers have reached depths of over 100m in 2008.