Lannon stone is a type of buff-colored, blocky, sedimentary Dolomite (rock), whose name is derived from Mr. William Lannon, one of the original settlers of the Village of Lannon, Wisconsin. Lannon stone can be found throughout the Niagara Escarpment, which runs underneath much of the Great Lakes. Lannon stone is known for its durability and is used in the construction of houses and businesses, both for the structural integrity it brings and the aesthetically pleasing stone façade. [1] Lannon stone is found heavily throughout southeast Wisconsin in modern constructions either as exterior wall material, stone façade, or ornamental landscaping decorations.