Poly Haven — Volcano textures

Rock Face: Greg Zaal (photography), Dario Barresi (processing)
https://polyhaven.com/a/rock_face

Dark Rock: Amal Kumar
https://polyhaven.com/a/dark_rock

Both texture sets are released under CC0 1.0 Universal:
https://creativecommons.org/publicdomain/zero/1.0/
Legal code: https://creativecommons.org/publicdomain/zero/1.0/legalcode
Poly Haven asset license: https://polyhaven.com/license

Original download sources and file verification: SOURCES.md