What a tragedy. Aside from all of our little survival tricks (Inreach, fire, signaling etc) not sure why people are advocating for anything other than: STAYING WITH YOUR SHELTER (in this case a car). Unless you have the tools, the beta and the knowhow, stay with the car. People drive on roads. Rescuers drive on roads. Roads are visible from the sky. That is the rule. When lost and without resources, do not stray from it.
Generally, I would agree that's good advice, but you have to be careful in applying it to all situations. Especially in a place like Death Valley. Just because you're on a road in DV doesn't mean you're going run across people. Even during peak season when there are thousands of people wandering around, they mostly stay on the major highways. A small percentage of them will explore the backroads. When it starts getting hot, most of DV will be completely empty for months. Again, look back at the story about the Death Valley Germans. Their car got stuck in July, but it wasn't found until October, and only because it was noticed by an air patrol, not someone driving by. That's 3 months they would have been sitting out there in the desert waiting for rescue. This area that the couple was stuck is probably just as remote, so it could have been a long time before someone came across them.
If you look at the timeline, they were supposed to return on April 4th. So they were most likely stuck on or before April 3rd. The search didn't start until the 6th, and their car wasn't found until the 8th. That means they were out there for at least 5 days, possibly more. I'm assuming they were at the end of Gold Valley road from reading the articles, and the canyon where they were found is less than 2 miles long, so they were found less than a few hours away from the car. That means they could have possibly stayed with the car for 5 days or more before making the decision to walk for help.
" Willow Creek flows through a moderately deep and narrow canyon for 3 miles, from Willow Spring quite high up in the Black Mountains to the hills at the edge of the valley, where the water sinks below ground or evaporates. The stream is only significant in winter and spring"
So probably. But it's a moot point because they didn't need water.
The rest of the quote "The stream is only significant in winter and spring as during the long, hot summer the canyon dries up completely apart from a few algae-filled pools that persist all year."
They said they had 3 days worth of water, but that doesn't mean they didn't need water. Unfortunately since DV had <1" of rain last year, the chances of that spring being dry was pretty high.
I agree, that for them, it was a viable option. Probably not much else to burn out there
. Just as a general precaution about what to do when lost - maybe the best advice is to think long and hard about your choices - before making them.
Looking at Willow Creek on GE and in the NPS flyer, I would never have even considered downclimbing that. - Even with that, my approach has always been to stay as high as possible - following the ridge lines instead of valleys which appears to have been a good choice in this case.
When hiking in the desert, I avoid the ridgelines as much as possible and stay in the canyons. It's cooler, a lot more interesting, and cooler. And did I mention it's cooler?