Tezontle

[1] Many colonial buildings in Mexico use the reddish cut tezontle on their facades.

Tezontle is a common construction material in the Historic Center of Mexico City as the relatively light-weight stone helps impede a building from sinking into the unstable lake bed on which Mexico City was built.

Non-building uses include its inclusion in flower arrangements and botanical gardens, as substrate for aquariums, and for temazcales and ovens.

[4] Tezontle is often used as the top layer of gravel on unpaved roads in Mexico.

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