The cracked ice is created by Abderrezak Bouhedda.
Check out this fine procedural cracked frozen lake material created by Material Artist Abderrezak Bouhedda in Substance 3D Designer.
The artist shared it was the first time he'd made such material and it was a fun and quick process.
Here are some other works from the author:
Bouhedda doesn't only create materials, there are also some props in his portfolio: