Baalbek, Lebanon, is the site of one of the most mysterious ruins of the Roman Empire, a monumental two-thousand-year-old temple to Jupiter that sits atop three thousand-ton stone blocks. (The pillars of Stonehenge weigh about a fortieth of that.) The blocks originated in a nearby limestone quarry, where a team from the German Archaeological Institute, in partnership with Jeanine Abdul Massih, of Lebanese University, recently discovered what they are calling the largest stone block from antiquity, weighing one thousand six hundred and fifty tons and matching those that support the temple.
