A Denver museum known for its dinosaur displays has made a fossil bone find closer to home than anyone ever expected, under its own parking lot. The dinosaur fossil came out of a hole drilled more than 750 feet (230 meters) underground as crews were looking this past winter at potential geothermal heating for the Denver Museum of Nature and Science. The museum is a popular spot for dinosaur enthusiasts of all ages, with full-size skeletons to awe kiddos barely knee-high to a person, let alone a Tyrannosaurus. This find is much less visually impressive — a hockey-puck-size rock an average person wouldn’t even bother to pick up from the ground — but astonishing for the odds of hitting it. “When I heard it was a dinosaur, I said, ‘holy guacamole.’ I mean, wow. I mean that’s your Willy Wonka moment,” said James Hagadorn, a geologist at the museum. “It’s like a once in a lifetime, right? Pretty exciting. And who would have thought it would happen here in the parking lot of the museum where we actually have boatloads of those dinosaurs on display and down in our collections.” Museum experts believe they bored right into the backbone of a smallish, plant-eating dinosaur that lived about 67 million years ago. The bore was only a few inches (10 centimeters) wide. With such a small sample, the odds hitting a dinosaur, even in a region with a fair number of such fossils, was exceedingly small. The dino fossil is now on display inside the museum.