3 veteran producers in the genre, Apocryphos, Kammarheit & Atrium Carceri, collaborate on this behemoth of an album. Each utilizing each others strengths to bring forth a dark and emotional ride through distant memories. "Onyx" is a soundscape journey related to the reflection of dispirited memories and obscure sorrows felt by mankind. With the multitude of techniques used by each artist, it also reflects the rich history of the dark ambient genre and how it has progressed through the decades. 
The signature analogue darkness of gargantuan caves of Kammarheit is combined with the sacral and emotional layering of Apocryphos and the rhytmical bass throbbing and isolated pianos of Atrium Carceri. This album was created by cross linking 3 studios in Oregon (US), Pennsylvania (US) and Umeå(Sweden). It took over 3800 lines of studio notes to finalize the album.