Thanks OK. I think LE can figure out generally where he was when he answered that phone call. But if he was still two hours from home, he had been gone so long that it wouldn't narrow down where to look for Susan.
BUT, it may help to know if he was E, W, N, S of West Valley.
I may have missed this, but I mentioned a couple of days ago the possibility that Susan or Josh had shared with someone where they really did go camping at some (normal) time. Does anyone know if they did? It's quite possible that Josh took her to a familiar location.