Sand, sand, and more sand.

2 large bases overlooking a flat expanse of barren, windswept desert with only a few odd rock formations and a handfull of buildings in between, navigation should be easy right? Maybe up high where the sands arent blowing and visibility is 100\%, but for you people who like to walk, have fun.

Not so well hidden (oops) is a small sensor net, one which is toggled by a switch deep inside an underground base (no defenses here).