Technical, with a diamond-splitter rock at the bottom. The rock becomes exposed at levels below about 3 feet. It's best to bang through a hole toward the right and ride the channel to the right of the diamond-splitter.
There's an optional boof for those who want to provide carnage for their video-wielding buds. (See the photos on the right for the boof and the effects of a blown boof; click on the photos for the full-sized version.) Boof is best at and below 3ft