What makes Mammal by Altar of Plagues notable?

'Mammal' received critical acclaim for its ambitious composition and depth, appearing on various year-end lists and helping to elevate Altar of Plagues' profile internationally. The album's unique blend of black metal with expansive, ambient textures influenced a wave of post-metal artists, contributing to the genre's growth during the early 2010s. By the time 'Mammal' was released in 2011, Altar of Plagues was gaining recognition in the underground metal scene following their debut album 'White Tomb' (2009). This sophomore effort marked a significant artistic evolution as they began incorporating more atmospheric and experimental elements into their sound, solidifying their place within the post-metal genre.