Mount Scoria rises up from the surrounding plain, a single and spectacular highlight against an otherwise flat landscape. Across its peak, multi-sided rocks are regimented into large vertical and semi-vertical pillars or columns, blunt at the top as if they’d been cropped. Not only odd in shape, the columns are also unique for the sound they make when struck.
Still standing tall after 25 million years, Scoria’s exceptional staying power is due to the hard volcanic rock that lay at the core, exposed only after the softer surface had weathered away.
The work of a small volcano, the mountain is actually a basalt plug and the dramatic, angular-shaped rocks the result of the cooling process. The six-sided columns cooled slowly and evenly, while the five, seven, or eight-sided columns cooled much faster and erratically.