[blam]

"Does this jibe with where the "Gold of Exodus" book described the crossing, I wonder?"

I believe the crossing and the mountain described here are the same as described in The Gold Of Exodus

[Sinbad]

Blam, that is not quite correct. The area that is pinpointed by Cornuke and Williams in The Gold of Exodus is at the Strait of Tiran which is further south of the Nuweiba beach area.