The Sibiran Range was a chain of mountains on the continent of Sibir on planet Deneva. They were situated to the east of the province of Mallarashtra, and distinguished by their snowcapped peaks and evergreen covered slopes. (Decipher RPG module: Worlds; ST - Destiny novel: Lost Souls; TNG novel: Losing the Peace)

the planet Deneva
cities and settlements	Tellerton • Lacon City
landmarks and institutions	Summer Island Playhouse
geography	Sibir • Sibiran Range • Summer Islands
bodies of water	Aurelius Ocean • Bolsibir Sea • Iapetus Ocean • Terringen Ocean • Toran Sea