Answer:
These are believed to be found at the end of rainbows
What gets broken if itβs not kept?
What is so delicate that saying its name breaks it?
What goes up and down without moving?
I am the red tongue of the earth, that buries cities.
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.