Contextual Analysis of "mountains crumble" in Lyrics

finally run out of helium

i'm gonna love you 'til the sky

then i stumbled

and there you were

if the sun refused to shine

there will still be you and me. kind woman

yours

in other words until eternity

then as canyons burned

the last cowboy band

start

turn to dust in the breeze

you're standing strong though it all

in the eyes of a believer

it's the fall of the empire. or has the end begun

will the earth stand still