Rhyolite is a ghost town in Nye County, in the U.S. state of Nevada. It is in the Bullfrog Hills, about 120 miles northwest of Las Vegas, near the eastern boundary of Death Valley National Park. The town began in early 1905 as one of several mining camps that sprang up after a prospecting discovery in the surrounding hills. During an ensuing gold rush, thousands of gold-seekers, developers, miners and service providers flocked to the Bullfrog Mining District.