It was the view of the Etruscan haruspices that a temple of Vulcan should be located outside the city , ( 5 ) and the Volcanal may originally have been on or outside the city limits before they expanded to include the Capitoline Hill . It was the view of the Etruscan haruspices that a temple of Vulcan should be located outside the city , and the Vulcanal may originally have been on or outside the city limits before they expanded to include the Capitoline Hill .