Peter Norbeck Scenic Byway
Black Hills, SD

The Black Hills are an island of contrasts, rising in stunning visual counterpoint to the surrounding prairies. Geologically, they are the easternmost outlier of the Rocky Mountains. They are the truncated remnants of a dome, formed between 600 and 60 million years ago when volcanic action from below thrust flat layers of young, sedimentary material upward on the back of deeper, ancient volcanic rocks.