The Chorna, Chornaya or Chorhun is a small river in southern Crimea. It is long.
The Chorna River begins in the Baydar Valley northeast of the small town of Rodnikivske (44ð 28' N 33ð 51' EG), just west of which it flows into a reservoir. From there it continues in a westerly direction to the town of Inkerman (Belokamensk) where it enters the Bay of Sevastopol, on the southwest coast of the Crimean peninsula.
Inkerman was a key location during the Crimean War of 1853âÂÂ1856 and the Chorna lends its name to the Battle of Chernaya (Chyornaya) River of 1855.
Located at the coordinates +44ð 31' 4.00", +33ð 42' 5.00" near the Chorna River and , which was previously known as Alsou or Alsu before 1948, in the Alsou tract about east of Balaklava near the Yalta Sebastopol highway is the () in Crimea, which is also known as Objekt 221 or Object 221 and code named "Alsu-2" () or "Nora" (), and is on the eastern slope of the mountains and beneath the Mount Mishen () which is also called Shaan-Kaya () or the Nishan-Kaya mountain (). The construction of the underground command post started in 1977 and continued for about 15 years. The pioneer camp "Alsu" is located nearby. In July 2021 with Russian Marines wearing black berets on guard duty, construction began to restore the underground facility allegedly as part of Patriot Park ().