By Benjamin Spillman, Reno Gazette-Journal

Imagine the vertical world of rock climbing combined with the power and sound of off-road racing.

Now you understand rock crawling.

The small-but-compelling niche of off-road motorsports involves driving heavily modified 4x4s up and over boulders that would be difficult to climb on foot, let alone with a couple thousand pounds of steel and rubber.

It’s essentially the logical extension of weekend trail driving for people willing to spend tens of thousands of dollars and countless hours working on their 4x4s.

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