What may at first appear to be a crystal structure on a distant alien planet is actually a beautiful work of ice art by 5 American guys who come together every year to build an “Icehenge.”

About four years ago, Drew McHenry, Kevin Lehner, Quinn Williams, Alec Seamars and Patrick Shields thought it would be fun to try out some antique ice cutting equipment to see what it’ was like to be an ice harvester. Their experiments led to their “Icehenge” creation. In 2014, unfortunate weather conditions prevented them from finishing this project, but this year, it was built in only two weekends.

This structure can be found on Rock Lake near the city of Lake Mills, Wisconsin. The gigantic pillars of ice weight around 140 kilograms (300 pounds) each and the pieces laying on them – 90 kilograms (200 pounds) each.

More info: eliwedel.com (h/t:  wkow.com,  hngnews.com)