"This aptly named album, Heavy Rocks, is a very heavy punk rock/traditional heavy metal/stoner rock/doom album that plays tribute to the psychedelic, blues, punk, and heavy rock bands of the 70s, and maintains a 90s stoner rock sound rooted in their typical doom metal style.
Very good overall.
Edit: I saw Boris play it live... it makes the album itself sound dull. Much better live. I guess the production isn't that great for the studio version."