This NFT doubles as a riddle

This thing all beings devours;
Man, beasts, forests, flowers
Crunches iron, chews steel;
Degrades all beauty with zeal
Flattens all mountains
Turns earth into fountains

What's the answer?

1/1

Dimensions: 1200px Sq
Codec: AAC, H.264
Duration: 00:15
Audio channels: Stereo

Audio design by German Sound Designer Jürgen Branz