This rare four thousand four hundred pound conglomerate boulder is made of irregular-sized jasper pebbles cemented together over millions of years by a finer mix of quartz sand. Often called puddingstones because the stones resemble a British Christmas pudding, Michigan puddingstones are a sedimentary rock first formed in riverbeds a billion years ago in northeastern Canada. During the Ice Age, glaciers pushed sedimentary rocks from northern Ontario to eastern Michigan. Because of its jasper pebbles, this boulder's origin can be traced to a Canadian mountain outcrop north of the St. Mary's River and Sault Ste. Marie. In the nineteen seventies, Jim Laarman, former GWBHS President, found this boulder at a gravel pit south of Milford and saw it as a landmark honoring the glacier that formed many of West Bloomfield's inland lakes and islands, including Apple Island, whose surface form shows the direction of the final glacier that sculpted Orchard Lake.