Isoline Map

http://www.google.com/imgres?q=isoline+map&um=1&hl=en&client=safari&sa=N&rls=en&biw=1205&bih=706&tbm=isch&tbnid=nYGh7XC_EdBcAM:&imgrefurl=http://www.grossmont.edu/judd.curran/outline1.htm&docid=a4SEU0lodjrRhM&imgurl=http://www.grossmont.edu/judd.curran/images/topo.jpg&w=400&h=288&ei=oc3HTtOPIYuCsALcse08&zoom=1&iact=hc&vpx=785&vpy=196&dur=121&hovh=190&hovw=265&tx=86&ty=126&sig=112690992776489872722&page=4&tbnh=132&tbnw=184&start=46&ndsp=18&ved=1t:429,r:10,s:46

Isolines are used to map a certain area such as elevation and use contour lines to connect points of equal value. This map of Utah uses contour lines to illustrate the elevation value over a ratio of land distribution.