MeshXP Idaho West Wyoming and West Montana is compiled using 10 m resolution elevation models. MeshXP function is to add elvations points to the terrain to further increase elevations precision and a better shaped terrain. Hydro Scenery have been also upgraded to be more precise with Nhd high res. data. This mesh can be used on its own or underneath photorealistic scenery. It use Xplane 11 default Vectors ie roads, landlass. This is an xp11 terrain mesh. Coverage: Idaho; West Wymoming and West Montata. No decrease of frame rates. All MeshXP packages are designed to fit into each over to provide continuous coverage.