Just as the name implies, one heads underground to a dim grottolike room to take in this eatery's culinary delights. Locals pack it in at happy hour for small bites like the mojo chicken chicharrón lettuce wraps, roasted Brussels sprouts and pork belly tacos. Entrées feature local fare like rabbit meatloaf and buffalo short ribs. Don't love game? The truffle mac and cheese and the bacon burger are crowd pleasers. Skip dessert but don't pass up the creative cocktails.