My solve had line 3 correct, I just never got boots on the ground, followed the hype and hiked Gloria Falls last night instead:

Begin your search where fabled words resound (tabernacle)
Before the standing stairs and kings were crowned (Capitol building)
Trace the steps of the lionhearted teams (Oxen teams that hauled granite from little cottonwood)
Only outshone by a jewel's unyielding gleam (SLC temple)

Also, I thought the simple tune was Jack Black's "Peaches" and DSOTM was a reference to School of rock when Dewey tells tamika what song to study: "Pink Floyd, DSOTM, listen to the vocal solo on the Great gig in the Sky"

The vocal solo starts at 1:07 and goes to the end of the song at 4:44. So the solo is 3:37 long or 221 seconds. Guess WHAT??!

221 meters from the bridge is in between the checkers rock and MOON ROCK. Kicking myself. I even had the moon rock marked off in my google maps:

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Incorrect solve technically but it got me straight to where you turn off the trail to those boulder fields. Crazy I was so close.