Sorry to sound like a broken record, but Plan Ahead And Prepare!

Terribly prepared man dies while hiking in Mexico. RIP Hari.

Lowlights from the article:

accidentally summitted another mountain
“I’m not exactly sure how to get down”
the phone company released all the information from Khalsa’s phone but said the GPS had been turned off before his disappearance
was reportedly carrying with him only a liter of water and a package of trail mix

Plan Ahead And Prepare is the first rule of Leave No Trace
bring a map, know the terrain, carry sufficient supplies