The following 5-by-5 matrix represents the 25 2-kilometer-square areas within the 10-kilometer-square AREA 56,377 whose SW (SouthWest) corner has NAD83UTM coordinates: 5 60 000 E 37 70 000 N .  Each 2-kilometer-square area is represented as a 1-by-1 array of JTNP topo tiles each of which is a topographic map of a 2-kilometer-square area. Each JTNP topo tile has been composed by coalescing in Adobe Photoshop a 5-by-5 array of USGS tiles each of which is a topographic map of a 400-meter-square area. Those 2-kilometer-square areas whose topo maps are currently accessible for viewing on this website are colored green, and clicking on the black link in a green matrix element initiates the download of the USGS topographic map of the corresponding 2-kilometer-square area. Each area download may take a few minutes. Some of the areas are labelled with the name of a prominent feature contained in the area. The names of camping/hiking/climbing features are printed in blue , while names of cultural units are printed in red . If the name of a feature in an area is displayed as a Blue Link or as a Red Link then clicking on that link causes the downloading of the topographic map accompanied by scrolling intended to make the named feature immediately visible within the Explorer window.