A Clue

A clue for you to solve if you can,
to find this green white striped little man,

In a yard where builders toil,
Look for me where they mix and moil.
Not below the solid ground,
But where metal frames abound.

Above the base, yet under the sky,
Find where the hidden treasures lie.
Climb the bones that reach so tall,
Behind the scaffold’s sturdy wall.