A museum stands next to the site, and in the bowels of the mine is now the Sanford Underground Research Laboratory. Since the mine's closing scientists have converted it into an underground laboratory where physics experiments can be conducted. The laboratory needs to be deep underground to avoid cosmic radiation. From Lead we took Spearfish Canyon Scenic Highway, which follows a clear meandering mountain stream. Towering cliffs and ponderosa pines continued to surround us, if you are looking for a paradise on earth this does come close to that ideal. When we reached Roughlock Falls an interpretive sign near them captured my musing thoughts exactly: "Spearfish Canyon showcases paradise".
Along the scenic highway we saw signs for several waterfalls, however, it was getting late in the day and we only had time to hike into Roughlock Falls. The name dates back to the 1870s when wagons traveling through the canyon's deep ravines had to deal with excessive speed going downhill. The drivers had to chain or log their wheels, which then allowed the wagons to slowly skid down the slopes.
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