Robert H. Dott, Jr. and John W. Attig wrote Roadside Geology of Wisconsin to help residents and visitors alike envision mastodons roaming in front of glaciers 12,000 years ago, feel storm waves pounding sea cliffs 500 million years ago, and hear volcanoes exploding 1,900 million years ago. With lively prose, detailed maps, black-and-white photographs, and shaded-relief images, the authors succeed in their goal, unraveling the 2,800 million years of geologic history recorded in Wisconsin's rocks. Introductory sections describe the geology of each region, and thirty-five road guides locate and...