The Haxan Cloak’s Excavation is an aptly named trip into the other side of the human ego. It takes listeners on a dark ride, requiring several listens for its movements to sink in and rewarding the patient with a unique listening experience. Starting with deep bass drum hits on “Consumed,” it moves into the two-part “Excavation,” which at first feels like travelling at the deepest part of the ocean, drumless and with little light let in, but deep sonar blasts of bass, heartbeats and backward sound guide us as if we’re seeing the unseen. Part two opens the chasm a bit, with squelching beats you could almost dance to, were they not so brutal and irregular. “Mara” sounds like the exact moment the protagonist finds the body in film noir or a horror film, built on unseemly strings and a door-slamming beat. The two-part “The Mirror Reflecting” gets even deeper, with a beautifully decayed last quarter, and the nearly 13-minute “The Drop” actually finds The Haxan Cloak’s Bobby Krlic at his most open and easy to follow, with melodic synths that sound like a synth-pop song slowed to quarter-speed. Though it provides few easy entry points and demands much of its listener, The Haxan Cloak’s Excavation is a worthwhile journey, even just to say you made it to the other side.