Note 15 — CHIUSI
Reading edition
'It is by some pretended that these subterranean passages form part of the labyrinth of Porsena, but this opinion has no foundation. They are much more probably connected with the system of sewerage, and the subterranean chambers may have been either cellars to houses or favissae to temples.'—Dennis, Cities and Cemeteries of Etruria, vol. ii.