If they don't exist, create folders named Mods and then terrains inside it.

: An extensive overhaul of the free Caucasus map. It replaces ground, mountain, field, and airport textures to remove the "greenish" vanilla tint, making it compatible with even lower-end GPUs. Barthek’s Reworks

Installation is simpler than you think. Do not use the standard Saved Games/DCS/mods/aircraft folder for terrains. Full terrains go directly into the core game files.

Dcs - World Map Mods [new]

If they don't exist, create folders named Mods and then terrains inside it.

Installation is simpler than you think. Do not use the standard Saved Games/DCS/mods/aircraft folder for terrains. Full terrains go directly into the core game files. If they don't exist, create folders named Mods