An aerial view of “Double Negative,” an earth sculpture by Michael Heizer on Mormon Mesa just n …

An aerial view of "Double Negative," an earth sculpture by Michael Heizer on Mormon Mesa just n ...

An aerial view of “Double Negative,” an earth sculpture by Michael Heizer on Mormon Mesa just northeast of Logandale, Nevada, on September 15, 2016. Michael Quine/Las Vegas Review-Journal Follow @Vegas88s