Ken Block vs the Knife Edge in 'Terrakhana'

Ken Block's newest Gymkhana-style project, "Pennzoil Synthetics Presents: Terrakhana, The Ultimate Dirt Playground," takes the rally and action sports ace into uncharted territory.

This time out, Block and his custom-built Ford Fiesta RX43 tackle the off-road driver's dream destination of southern Utah, in a region known as "SwingArm City". Block freestyled his way through the desert terrain, coming face-to-face with steep dunes, towering cliff formations and some of the largest natural jumps in the world.

"There's one hill that we call 'knife edge' that, if I were to go off the back side, it would be a 100ft drop to my death," Block told TopGear.com. "It was fun to do it in a rally style way – you don't normally see a car up there."