Allan Mountain, Idaho - 7.5 Minute Series Topo Map Exploring Southern Utah 1 forming scenic black terrain that

forming scenic black terrain that contrasts sharply with red-brown to near-white sandstone cliffs

and new photographs picture the Leonid meteor shower

and core and outcrop photographs

which erupted to produce an ash-flow tuff now partly buried by the gravity slide

Allan Mountain, Idaho - 7.5 Minute Series Topo Map Exploring Southern Utah 1 forming scenic black terrain thatThe 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