Many of our natural stone veneers are high density dolomitic limestone from the Niagara Escarpment quarried in beautiful Door County, Wisconsin. This stone formation runs the length of the eastern part of the state of Wisconsin. The area was once covered by a warm sea and the stone got started as the shell deposits of marine life, forming the basic limestone. As the sea retreated erosion washed in magnesium, slowing forming the harder dolomitic limestone. The stone is well layered and quarried by pulling up one layer at a time. There are three faces of our stone: bedface, splitface and seamface. The bedface refers to top and bottom of the sheets and is full of color from the minerals between the layers. The splitface refers to when one of the layers is cracked in the in the middle of the sheets via a hydraulic press. The seamface is the weathered edges of the layers and formed from natural cracks in the ground allowing the minerals to sink in and color them. Our stone has been tested can handle the most extreme exterior applications.