the ground tezontla = tezontle molidoEl tezontle is a red ( 41 igneous volcanic rock; It is located on the slopes of the hills, volcanoes and depressions. In the United States can be found in the Valley of death, in Europe in the Stromboli volcano and Mexico finds it on the Eastern and Western mountain ranges and volcanoes as Popocatépetl and Iztaccihuatl.se produced from stone pumice, sand and magma. Its appearance is impaired and fluffy and sometimes becomes a hard stone. Used in the construction of houses or dams, and mining industry being rich in minerals such as calcium and zinc.Tezontle has components from iron, hence its reddish dioxide. It is a stone that does not weigh, its texture is vesicular, burbujeada and porous, hence its fluffiness. Its properties include the Save heat, but is permeable or insulation. Some of the uses given to this rock are: floral arrangements, as cover in gardens xerophiles or cactarium, construction of baths temazcal, barbecue and bread, manufacture of the black wall furnace construction. Ground is used to fill the streets of dirt and as a façade of some houses.