I'll do more and write more of my own stuff when I get my copy of MGS3 back. For now here are just descriptions and the Russian translations.
Dremuchij (дремучий, "dense") - A bushy forest located on the edge of a gigantic cliff. A gavial-infested swamp lay to the north.
Dolinovodno (Долиноводно, "water valley") - An area with a rope bridge over a very large ravine, connecting Dremuchij to Rassvet.
Rassvet (Рассвет) - The location of a run-down, abandoned factory.
Chyornyj Prud (Чёрный пруд; "black pond" or "black lake") - A large swamp inhabited by many fish, gavials and frogs.
Bolshaya Past (Большая пасть, "great cavity") - A forest that housed a materials shipping facility, and a deep crevice, which leads to Chyornaya Peschera.
Chyornaya Peschera (Черная Пещера, "Black Cave") - A dark subterranean cave system.
Ponizovje (Понизовье) - A large swamp consisting of a river that split off to a warehouse and to Graniny Gorki.
Graniny Gorki (Гранины горки, "Granin's Mountain") - Granin's research facility, with a forested area to the south, laid with many traps.
Svyatogornyj (святогорный, roughly "sacred mountain path") - A large forest with a resource shed to the east, leading north to Sokrovenno.
Sokrovenno (сокровенно, roughly "most holy woods") A heavily forested area, comprising a waterfall, a clearing, and a plateau. A mine shaft to the north led up to the Krasnogorje mountains.
Krasnogorje (красногорье, "Redridge") - A mountainous area, comprising large stretches of rocky terrain, and a heavily guarded mountaintop, defended by anti-aircraft guns and Hind A gunships, during GRU occupation. A secret underground tunnel led into Groznyj Grad.
Groznyj Grad (Грозный град, "terrible fortress" or "terrible city") - A large military fortress, equipped with weapons research facilities and a large runway.
Tikhogornyj () - A small forest with a waterfall to the north that hid a cave leading up to Groznyj Grad.
Lazorevo (лазорево, roughly "lush green earth") - A long stretch of forest surrounding a small road.
Zaozyorje (Заозёрье, roughtly "near the lake") - A deep forest leading north to Rokovoj Bereg.
Rokovoj Bereg (Роковой берег; "fatal coast" or "lake of destiny") - An area with a lake, and a large bed of what looks like ornithogalum flowers.
Dremuchij (дремучий, "dense") - A bushy forest located on the edge of a gigantic cliff. A gavial-infested swamp lay to the north.
Dolinovodno (Долиноводно, "water valley") - An area with a rope bridge over a very large ravine, connecting Dremuchij to Rassvet.
Rassvet (Рассвет) - The location of a run-down, abandoned factory.
Chyornyj Prud (Чёрный пруд; "black pond" or "black lake") - A large swamp inhabited by many fish, gavials and frogs.
Bolshaya Past (Большая пасть, "great cavity") - A forest that housed a materials shipping facility, and a deep crevice, which leads to Chyornaya Peschera.
Chyornaya Peschera (Черная Пещера, "Black Cave") - A dark subterranean cave system.
Ponizovje (Понизовье) - A large swamp consisting of a river that split off to a warehouse and to Graniny Gorki.
Graniny Gorki (Гранины горки, "Granin's Mountain") - Granin's research facility, with a forested area to the south, laid with many traps.
Svyatogornyj (святогорный, roughly "sacred mountain path") - A large forest with a resource shed to the east, leading north to Sokrovenno.
Sokrovenno (сокровенно, roughly "most holy woods") A heavily forested area, comprising a waterfall, a clearing, and a plateau. A mine shaft to the north led up to the Krasnogorje mountains.
Krasnogorje (красногорье, "Redridge") - A mountainous area, comprising large stretches of rocky terrain, and a heavily guarded mountaintop, defended by anti-aircraft guns and Hind A gunships, during GRU occupation. A secret underground tunnel led into Groznyj Grad.
Groznyj Grad (Грозный град, "terrible fortress" or "terrible city") - A large military fortress, equipped with weapons research facilities and a large runway.
Tikhogornyj () - A small forest with a waterfall to the north that hid a cave leading up to Groznyj Grad.
Lazorevo (лазорево, roughly "lush green earth") - A long stretch of forest surrounding a small road.
Zaozyorje (Заозёрье, roughtly "near the lake") - A deep forest leading north to Rokovoj Bereg.
Rokovoj Bereg (Роковой берег; "fatal coast" or "lake of destiny") - An area with a lake, and a large bed of what looks like ornithogalum flowers.