Ceal Floyer, Rock Paper Scissors, 2013. On view at Kölnischer Kunstverein in Berlin through October 20.

David Adomo, Untitled, 2011. Stones, plaster dimensions variable. On view at Untitled in New York through October 20.

Fischli/Weiss, Rock on top of Another Rock, 2010/2013. Installation view. On view at Serpentine Gallery in London through March 2014. 

Michael Heizer, Levitated Mass, 2013. Installation view. On view at LACMA in Los Angeles, ongoing.