Smooth Knoll, Utah - 7.5 Minute Series Topo Map american southwest The Green River Formation

The Green River Formation

Olympic National Park encompasses four distinctly different ecosystems in its nearly one million acres

specifically focusing on the region encompassing Powder Mountain

Dark Canyon Wilderness

Smooth Knoll, Utah - 7.5 Minute Series Topo Map american southwest The Green River 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