Natural history Spearfish Canyon

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roughlock falls nature area


approximately 600 million years ago in precambrian, area covered sea. waters subsided , land masses began appear 60 30 million years ago (between paleocene , oligocene epochs), drainages such spearfish canyon formed softer rock eroded away. today, national scenic byway, u.s. highway 14a, winds through canyon. area crossroads, , trees , plants rocky mountains, eastern woodlands, northern forests, , great plains areas can found here.







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