https://youtu.be/vaTSQzYIR3U

Lyrics-

Rattle big black bones
In the danger zone
There's a rumblin' groan
Down below
There's a big dark town
It's a place i've found
There's a world going on
Underground
They're alive, they're awake
While the rest of the world is asleep
Below the mine shaft roads
It will all unfold
There's a world going on
Underground
All the roots hang down
Swing from town to town
They are marching around
Down under your boots
All the trucks unload
Beyond the gopher holes
There's a world going on
Underground