As street spots become increasingly over-skated, a new breed of skateboarders are heading underground to build their own little slice of shred-paradise. In an old cellar vault in Vienna, Philipp Schuster and friends built an underground DIY bowl; 592 square feet of harsh trannies, claustrophobic corners and one-of-a-kind acoustics. It's known as The Concrete Monster, and this thing will eat you alive if you're not on your A-game.
Tags: an concrete diy Monster underground
