Inter American Geodetic Survey. North Decimal Degree -18.000000. South Decimal Degree -18.166667. East Decimal Degree -68.750000. West Decimal Degree -69.000000. Alternate title: Nevado Sajama, Bolivia. Relief shown by 20 m. contour interval and spot heights. Universal transverse Mercator projection. Standard map series designation: Serie H731=[Series] H731. With a glossary.