[2] The Krasna flows through the Luhansk Oblast of Ukraine, and has a basin drainage of 2,710 km2.

The 151-km long river begins at the village of Tymonove, flows though Svatove, and ends at Kreminna, where it merges into the Donets.

The right bank is high, up to 60 m in places, and cut by short but deep ravines.

The flat left bank is lower, less than 30 m high and gently cut by tributary streams.

The river is protected within the Sieverski Donets National Park.