Geometric Sandcastles by Calvin Seibert Neodim 9 years ago Calvin Seibert builds impossible géometric shapes with sand ! ++Calvin’s FlickR ++via Colossal PinShareTweet0 Shares Tags:sand, sculpture PinShareTweet0 Shares Facebook Prev Article Next Article Tags:sand, sculpture Related Posts Skellie, One of the Funniest Instagram Account around Neodim January 11, 2015 We Sent Their Briefs Back Neodim September 15, 2014 Trash Can Back Packs Bring Humor to the Busy Streets of Sao Paolo Neodim June 25, 2014 Add Comment Cancel reply Save my name, email, and website in this browser for the next time I comment.