The fossil, estimated to be about 70 million years old, was buried 763 feet below the surface and unearthed because of a drilling project.

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.

This dino-mite find, which Hagadorn described as "quite the cherry" on top of the project's intended mission, was discovered 763 feet below the surface and was identified as the "deepest and oldest dinosaur fossil ever found within the city's limits," the museum said in a press release.