The public sculpture Levitated Mass is a subterranean walkway beneath a 680,00 pound rock, next to the Los Angeles County Museum of Art. The rock made news earlier in the year during it’s 11 night crawl through Los Angeles from a quarry in Riverside County. The project cost over ten million dollars, but it’s free to the public. Heizer is know for creating large-scale outdoor artworks. He’s currently developing City, a monumental landscape project on thirty acres in a Nevada desert .