Around Laurel, Maryland, the ground is rich with iron ore, which was mined to iron for manufacturing in the 1800s and 1900s. In 1858, African American miners were the first to discover dinosaur fossils in Laurel. Today, Dinosaur Park continues to preserve the land where dinosaur fossils can be found and protect the fossils they find. The park is open from dawn until dusk, and while you can visit the fossil bed, you are not allowed to take any fossils outside of the park. The best time to visit is from 12 p.m. to 4 p.m. on the first Saturday of the month during open houses, when paleontologists and experts are on hand to answer questions, and you might even be allowed to help with a dig!