Kyle Burgess said he'd stumbled upon the mountain lion's cubs during a trail run in Utah's Slate Canyon.
Octogenarian Harry Harvey was missing for three nights after getting separated from his walking partner in a hailstorm.
UPDATE: More than 200 people were airlifted to safety.
Take it from me.
The 28-year-old man was among "visitors exactly where they were allowed to be," said a park spokesman. It was "just an unfortunate, tragic event."
A third man who fell was airlifted to a local hospital in Moab.
The exhausted mastiff had to be carried down a Utah mountain by a search and rescue squad.
What one woman described as a growling pig turned out to just be cars driving over a rumble strip on a nearby road.
A search team "never would have located" the man's body were it not for the barking of his dog, Daisy.
Ryan Osmun compared his experience in Utah's Zion National Park to "standing in a huge puddle of concrete ― that basically dries instantly.”