Njiqahdda are nothing if not prolific, but the extra time spent on this one (the band's last release was in 2011, during which it was responsible for four LPs) could be the reason for its quality.  Serpents in the Sky shines as an avant-garde, though still coherent and accessible, 70+ minute black metal album.  Thankfully, this one avoids the most familiar of prog metal trappings during what is possibly the apex of the genre's popularity (and staleness).