Dubno is a city and municipality located on the Ikva River in Rivne Oblast of western Ukraine. It serves as the administrative center of Dubno Raion. The city is located on intersection of two major European routes, E40 and E85. The city is estimated to have a population of 36,901. It is located within the historic region of Volhynia.
In Soviet times it was home to the Cold War facility Dubno air base. The city is also famous for its fortress.
Wikipedia https://en.wikipedia.org/wiki/Dubno
Coordinates 50°25'7.65" N 25°44'44.15" E