Art Preserves

I was contemplating through the wood
"Nature: dying, regenerating
And never the same way twice."
... Then ...
Vile disharmony before me stood;
A wall of glass and metal,
Uncommon common art,
Proclaiming "Nature Preserves".

Natural, slow time must pass.
Ten million years:
Preservers gone,
Buried deep, A shard of glass
Quietly preserved.