Birch bark, pine needles, marine shell; copper tubing assembled with stainless steel screws and epoxy; Portland cement mixes with metal foil and nylon reinforcement; acrylic paint and sealer
Dimensions: 73 x 73 x 66
Curious fact: Legend has it that a cow living near Saratoga Springs, NY, wandered from its field and fell into a crevice. When the farmer pulled the cow out he discovered stromatolites, rock-like accretions of photosynthetic bacteria that evolved in tropical seas. Geological models of tectonic plate movements locate this area of North America in the southern hemisphere 3 billion years ago!