Still in Old Bones, Perilla and old Priscus, Corvinus's stepfather, go tomb hunting in Caere. (Corvinus can't stand all that intellectual stuff and usually wriggles out of it, but he has his own experience with tombs...)
Etruscan tombs were and still are a site to be seen -- the moveable contents though are mostly in museums nowadays. The Mysterious Etruscans is probably the most comprehensive online site on the Etruscans, and there is a tombs page. You can click on individual tomb links for more details.
A little bonus: The Golden Plates of Pyrgi. Pyrgi -- where Corvinus comes to grief during a family sightseeing expedition -- was Caere's harbor. The Caeritans were the main seapower among the ancient Etruscans, both maritime and naval. Caere enemies accused them of being pirates.
And how do I know all this? I own The Etruscans by Michael Grant, one of his better efforts. My second-hand copy is a 1997 revised book club edition of the 1980 original, the same as in the above link.
