FSX – Scenery Bonneville Salt Flats, Utah (UT), USA. This is a simple landclass modification that adds the white Salt Flats of Bonneville that stretch from Wendover (KENV) in the west, all the way to the Great Salt Lake in the east, and south towards Dugway Proving Ground (DPG). By default, it is desert brown in FSX, when it should be very white. This will fix the problem. No changes are made to any airports. By Jason L. Terry.