I'm no longer assuming they drove on Harper Flat. And in fact, I'm not sure the truck was found in a wash or canyon (I think JRF's body
may have been found in Harper Canyon). From the pictures of the skeleton, I am assuming that the body was found in some kind of wash/canyon. LE said the body was "several" miles away from the truck.
It does sound like they're trying to retrieve the truck from Pinyon Wash (which is consistent with what people have been posting on the Anza-Borrego FB page).
This could mean that they did hike the 3-4 miles across Harper Flat to get to Harper Canyon. Is that how far you estimate it to be?
I think I posted about that day before yesterday. I thought I had a map saved that showed Pinyon Flat Road, but can't find it. But
here is a map that shows a possible hike from what is called PInyon Canyon Road (80 mile marker on the 78) and then a hike up Pinyon Wash, around Harper Flat, and then back down Pinyon Wash. So perhaps it's actually Pinyon Canyon Road. The directions given with the map say the parking is 2.4 miles from the highway. They would then have hiked up Pinyon Canyon as show on the map, looped around Harper Flat and come back.
But then, I have a hard time explaining the damage to the truck. If we take the view that the truck was damaged by flood waters in late August, then that would mean the truck was still operable and unwrecked when they took off on a hike. It's a fairly long hike (7.4 miles with Harper Flat loop included; viewing the archaeological sites up there would take time too).
This could be a case even more similar to the Yosemite case I posted about earlier (where the family was not that far from their car but just couldn't make it - and the temperatures for that family were lower than what Anza-Borrego records for July 24). Nearly every day in July up to mid-August was hotter than the day when that family died (three people).
That family had an 85 ounce water bladder and their planned hike was about 6-7 miles.
The announcement caps a three-month investigation.
www.sfgate.com
In that same year, one hiker perished on a hike in Anza-Borrego as well.
Other links to the Yosemite story:
The incident serves as a reminder to thoroughly map, plan ahead and be well-prepared when hiking, no matter the season
www.theguardian.com
They were just 1.6 miles from their car; tried to send a rescue text which failed to deliver:
And it was 105, not 117F that day. Reading the last two links shows how the person who organized this tragic Yosemite area hike had done most of the hike before - but at a different time of year, and before a fire went through the area, removing all shade. A simple lack of knowledge about trail conditions was responsible for three deaths there.
Could JRF have fallen or otherwise injured himself hiking up Pinyon Wash? Maybe they never made it to Harper Flat. It definitely sounds like a similar kind of desert/heat misadventure to me.