A museum in Denver has found a fossil that is almost 70 million years old under its parking lot while running an unrelated drilling project. "This may be the most unusual dinosaur discovery I have ever been a part of," said Patrick O’Connor, director of Earth & Space Sciences at the Denver Museum of Nature & Science, in a statement.

Scientists at a Denver museum stumbled onto the oldest and deepest-known dinosaur fossils unearthed in the city when drilling a test well for geothermal energy.

"Wow, what are the chances?" James Hagadorn, a geology curator at the Denver Museum of Nature & Science, told ABC News. Back in January, the museum found a fossil of a plant-eating dinosaur, believed to be nearly 68 million years old,