Complex sentence: Other excavated structures, not used for ritual purposes, include the Greco-Roman cryptoporticus, and in other cultures the dugout, souterrain, yaodong, fogou, and kiva.
Split into simpler sentences: Other excavated structures, not used for ritual purposes, include the Greco-Roman cryptoporticus. Other cultures also have constructed underground structures, including the dugout, souterrain, yaodong, fogou, and kiva.