Inter American Geodetic Survey. North Decimal Degree -11.166667. South Decimal Degree -11.333333. East Decimal Degree -67.750000. West Decimal Degree -68.000000. Alternate title: Sirena (Puesto Gomero), 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.