The point is, an attempt was made so that both vehicles were pushed off the side of an embankment and either rolled or tumbled downhill to where they were found. You can see in one of the pictures that the land rover apparently got high centered or stuck in a rut and didn't make it down the embankment. I would assume that was the vehicle they initially spotted from the air, being light colored and visible from the rear. Neither driver was found at the scene, so this is obviously not an accident. If that land rover had made it over the berm and headed down the hill, chances are good that neither vehicle may have been discovered by now.
The only questions I have right now are where are their bodies, and how many people were involved in the coverup ?