"Slag Heap", is the very first full-length from the frosted Minnesota experimental black metal band Kr Grauwacke. Offering us four tracks of minimal raw black metal with some ambient interludes. Beginning with "(After) Caledonia", an ambient intro that draws some rough almost industrial atmosphere. As if something mechanical is pounding from the inside of an old and creepy abandoned factory or in this case, some old mine. "AVM I VIII IX VIII" kicks in with the sound of tremolo picking notes creating a whole haunting environment that surrounds us and increases even more due to the howling on the background, as if it's coming from a very deep and narrow mine shaft, echoing in all of its dark and cold tunnels. "Under the Knout", a 12 minute long track that exhales a claustrophobic atmosphere, where strange sounds come from these several places, all at the same time, making it a very harsh and noisy track. "Roots of Madness" takes us back to Kr Grauwacke raw and incisive black metal that reminds me a lot of Ash Borer's latest effort. Barriers of hypnotizing guitar riffs that draw rough melodies as the haunted howls cry in the background. If i could describe this release i guess the word that sums it up is: Haunting. If you enjoy raw and creepy atmospheric black metal, then i strongly recommend this one for you. Check it out on the link below.