Finally after a lot of delay, I'm able to share the artwork I did for the new art book "First Founding" by GamesWorkshop, BlackLibrary. I painted this in Jun2021.

This artwork is showing Baal Planet with the Arx Angelicum, the vast fortress built in and on top of a extinct vulcano by the Blood Angels.
@ 2023 BlackLibrary. @GamesWorkshop.