For his latest exhibit at LACMA, artist Michael Heizer is practically moving mountains. Preparations have been underway for years to help Heizer move a massive 340-ton, two-story rock from a quarry outside Riverside to LACMA where it will be suspended above the heads of visitors, as if floating. The piece is called "Levitated Mass" and LACMA says that it's one of the biggest pieces of earth moved since ancient times. more ›

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