The neilmc_terrain_pack_cs.rar file you have requested: Clear Sky / Mods / Singleplayer / Terrain Pack - 21.17mb is not available. Perhaps try browsing all files for the game S.T.A.L.K.E.R.: Clear Sky and upload any files you want to share or are missing. This is the only information we could locate:
Totally revamps the terrain graphics for STALKER CLEAR SKY, using techniques of my own invention. Terrain now has realistic, rough surface texture which reacts with the sun-lighting direction, to create a detailed and realistic game vista.