Jagged tunnels edged with red trim, scooped walls and wave-like canopies are among the defining features of these vacant concrete skateparks in California, photographed by artist Amir Zaki.
The images feature in the California Concrete, a Landscape of Skateparks publication, and document 12 unusual and elaborate skateparks in city's across the state.

Zaki, who grew up skateboarding in a Southern California suburb, undertook the project to capture the structures designed for heightening the experience of the sport.
Devoid of skateboarders, his photos instead focus on the forms including scooped walls, curled roofs, undulating floors and mounds, and tunnels with a red trim.

"They are essentially large and elaborately designed empty vessels, as much as they are concrete models of naturally found elements of the landscape such as mountains, hills, waves, and rocks," Zaki told Dezeen. "Although these refined spaces are born out of conceptions of the various curvilinear shapes found in nature, they are frozen and 'permanently' cemented, recalling some of the most extreme examples of Brutalist architecture."

Among the set are the Chino Skatepark, Rancho Santo Margarita Skatepark and Eastvale Harada Skatepark in Corona. Each are carved deep into the ground making them "cavities more than monuments," according to the artist.  "They are, in this sense, anti-architecture," he added.
San Jose's Lake Cunningham Regional Skatepark, however, fea...