A West Jordan family is in shock today, after their relative swung to his death, Sunday afternoon, under a 140-foot high, sandstone arch.

Grand County authorities say a group of six friends hiked to Corona Arch and set up a large rope swing to pass under it.

The extreme sport activity has been made popular recently, by You Tube videos.

But the group miscalculated the length of rope they needed -- and when Kyle Stocking, 22, attempted his swing, he crashed into the ground, below the arch.

Paramedics responded -- but Stocking was dead at the scene.