This line shapefile represents the 600-meter interval contour lines of the world. This layer is part of the 2014 ESRI Data and Maps collection for ArcGIS 10.2. World Elevation Contours provides a base map layer for the contours of the world. DeLorme Publishing Company and ESRI. (2014). World Elevation Contours, 2013. ESRI. Available at: http://purl.stanford.edu/jz111zh7490