As the previous reviewer said, this is indeed difficult to pin down with one adjective. It's reminicent of broody Pelican, but a little like rocking out and simple Mastodon, some like Oceanic/Panopticon Isis ...and then like..
...Oh, I get lost. This album grooves, glides and purrs. In places it rocks out like nothing else in this crazily undefinable post-metal galaxy, and in those places it feels like a three piece rock band (which, to me, is rare for a this type of band to achieve - their field tends to denote a detachment, a type of music made almost specifically to be filmic: a soundtrack to mother natures greatest creations. That might sound pretentious, but listen to Pelican's Australasia while watching a rough sea)but then it can switch to a shoegazing moment full of beauty.
This album suprised me no end, it lay on my mp3 dormant until one day I found it and didn't turn back.