Ever-changing,

Through heat and pressure,

And time's relentless flow,

Metamorphosed into new forms,

Ores and marbles gleam and glow.

Relic of the ancient past,

Preserving secrets deep within,

Hidden layers waiting to be known,

Infinite stories yet unturned.

Changing with conditions

Kinds become new types that were none before

Like gneiss transformed from sediment