based on previous GIS and satellite imagery analysis work related to hilltop and mountaintop telecommunications sites... It is pretty hard to hide a road to the top of a mountain. The combination of free space radar generated elevation datasets (SRTM1/3, SRTM1, etc), free 3D terrain viewing tools (google earth pro) and free satellite imagery can be taught to almost anyone. Even if you bulldoze a small road only passable by a high clearance small 4x4 like a Toyota HiLux, it'll be easily evident from space.
