The most interesting monuments of Etruscan architecture which have been preserved are the tombs. They are for the most part chambers hewn in the rock, and supported by square piers. The tombs were either subterranean, and had an entrance façade hewn out of the rock, or they assume the shape of tumuli, which had one or more conical elevations resting on a superstructure.
A. Rosengarten, W. Collett-Sandars A Handbook of Architectural Styles (New York, NY: Charles Scribner's Sons, 1895)
Courtesy the private collection of Roy Winkelman