Moss & Lichen Boulders Moss surface stone is harvested from the surface of mountain hillsides and quarries. Its natural beauty comes from hundreds of years of weathering from natures elements. It's usually a dark brown to reddish color with occasional lichen deposits. Lichens are a mossy type growth on the stone, therefore being named Moss Rock. Lichen growth is very dependent on climate and the location of the stone in the quarry, so not every stone will have lichens present
