"The Call of the Wintermoon" is a song by the black metal band Immortal from the album Diabolical Fullmoon Mysticism.
The song's music video shows members of the band run amok in a forest and through the site of the ancient ruins of Lyse Abbey, wearing corpse paint and other articles such as a wizard costume, brandishing various weapons and, among other things, breathing fire.
Being the drummer at time of shootings, Kolgrim appears in the music video, despite having nothing to do with the studio track, the drums having been recorded by his predecessor, Armagedda.
[1] In the same interview, Abbath points that the whole video was recorded within two hours and that they had nothing to do with planning its production.
It was in this interview that Kolgrim invented the term "holocaust metal" which sparked controversy.