Caribou Mountain, Idaho - 7.5 Minute Series Topo Map Forest Service Map Geologic controls on the formation

Geologic controls on the formation of lakes in north-central Florida

The Bozeman Trail led to the goldfields of Montana for six years in the 1860s before the army abandoned its three forts along the way

such as Tower Ruin and Peekaboo Arch

Photographs are arranged with a unique thumb-tab reference system to make identification quick and simple

Paleozoic rocks exposed on the north and south and Precambrian metamorphic

Caribou Mountain, Idaho - 7.5 Minute Series Topo Map Forest Service Map Geologic controls on the formationThe distinctive characteristic of a topographic map is that the shape of the Earth's surface is shown by contour lines. Contours are imaginary lines that join points of equal elevation on the surface of the land above or below a reference surface, such as mean sea level. Contours make it possible to measure the height of mountains, depths of the ocean bottom, and steepness of slopes. A topographic map shows more than contours. The map also includes