Archaeologists exploring the caves beneath St. Louis recently discovered what they believe to be the petrified remains of the first toasted ravioli. Although estimated at 75,000 years old and bearing scars from the crude (and inexplicable) hammerings of some Paleolithic tool, the ur-T-rav looks more or less exactly like those you'll find in St. Louis restaurants today. Which is why true T-rav connoisseurs travel across the beautiful Clark Bridge to Gentelin's on Broadway in picturesque Alton, Illinois. Here they enjoy an appetizer of three oversize ravioli stuffed with wild mushrooms, spinach and Boursin cheese, sprinkled with grated Parmesan and served with marinara sauce for dipping. The ravioli are cooked to perfection, and the filling is the perfect blend of meaty and tangy. When archaeologists stumble across one in the year 77,007, they won't have a clue what they're looking at.