| Show new typographic map of the zion national pirk park one of the finest maps mapa ever put out by the survey to is the comment made by united states geological survey officials concerning the new topographic map of zion national park that has baa just been published copies of the map have recently been received lec rec elved by the park service at zion and comments of officials there greeven are even more enthusiastic thusia superintendent P P states that it shows the ex trembly rugged canyons country of zion with unusual accuracy and is also unique in being one of the first maps in the united states to be made from aeroplane photo graphs by the process known as an stereo 11 inthis in this process aeroplane photo graphs of a given area are taken from two different angles so that when the two photographs are viewed at one time through a suitable I 1 instrument the mountains and canyons anyone stand out intrude in true perspective just as in the old fashioned stereoscope hundreds of such pictures were taken i in mapping zion national park and were converted into i a single map byth by the eald aid of a delicate elaborate instrument known an as an am nearly half the area of the zion map rd ap was made madelin in this th loway way even with the aid of such modem methods odythe the geological survey parties worked for four seasons nea in order to complete data for the map A valuable feature of the new map m ap is I 1 the geological explanation by dr H B E gregory which is printed on the reverse side this clear and concise explanation should be of great value to stud eats and others who have long sought the answers to the wonderful geologic exhibits seen in inobe the cliffs and I 1 canyons of zion dr gregory has spent many years yearn in the zion region and to is regarded in scientific circles as an outstanding authority on the geology odthe area it itis is believed that the map and explanation will be of great benefit to the thousands of persons who annually visit Zion many persons have already benefited from advance information furnished by the geological survey and used by the park service in making the zion relief map now on exhibit at the utah I 1 state capi tol 01 ol Sl Si millar relief maps are in use bj y ne several rl of the colleges and universities v versi ri tie ties of utah as the result of permanent loan bythe by the national park service the new topographic map from which these relief models were constructed ted la Is now obtainable from the united states geologic survey washington D C at seventy five cents per copy it measures measure sap approximately 80 by 47 inches and is in printed in five colors it at la in expected that copies will also be available for sale at zion national park before the summer travel season begins |
