The Berlin-Ichthyosaur State Park is a state park of the U.S. state of Nevada. Located approximately 150 miles (240 km) east of Reno in the United States, it contains a preserved ghost town and several undisturbed ichthyosaur fossils of the species Shonisaurus popularis. The town of Berlin sprang up in 1896 when substantial gold veins were discovered nearby. In total, the Berlin mine produced 42,000 troy ounces of gold, all removed from tunnels by hard rock mining techniques. The mine became unprofitable by 1911, and the town of Berlin became uninhabited shortly thereafter.