The second edition of HELL OPEN AIR has previously announced its first details. The 2025 edition will feature Dutch folk metal forefront runners HEIDEVOLK and Spanish melodic death metal band  BLOODHUNTER. The festival now added Gwendydd and Serapis Project to the roster of performing bands

The festival will be held in Diest, Belgium, on May 2-4, 2025.

More names and details will be anounced soon.