Is the name of a desert the destination I'm looking for?
Nope
I'm thinking about that, "yes and no." That's a little tricky.
Well dead bodies + something else which is being searched for...now who would do such a thing?
Is there another body they haven't found yet?
Maybe
Is that why they stayed too long?
Maybe. But a short term stay at the location may just as well have been lethal...
Were the people who died searching for something, too?
Yes, they were not only searching for bodies...
Were the dead men searching for some kind of treasure?
You could put it that way...
Is the reason they didn't want to leave because one or more of the dead were family members?
No
Don't laugh. Were they searching for King Solomon's Mine?
No, but you are on the right track...
Hint: Try to get the big picture first and focus on location and occupation, before finding out how they actually died...