Crews have completed annual maintenance of the Seven Magic Mountains south of Las Vegas.

A spokesperson for the Nevada Museum of Art says work began on the art installation on Monday, Aug. 1, and was finished ahead of schedule.

Work included priming and painting the seven-pillared stones and sanding away damage to some of the lower boulders.

They also received additional coats of graffiti protectant, which will be applied on a regular basis.

Barriers that were in place around the pillars have been removed, according to the museum.

Seven Magic Mountains is a large-scale public art installation near Jean Dry Lake, off Interstate 15, that opened in May 2016.

Created by Swiss artist Ugo Rondinone, it features seven towers of stacked boulders standing more than 30 feet high.