This map, compiled and drawn under the supervision of Mr. G. S. Holland, in the Drawing Office of the Royal Geographical Society, and published with the assistance of the Mount Everest Foundation, covers an area of approximately 46×40 miles (74×64 km.) with Mount Everest very close to the centre.
The heights are given in feet and metres and the contours are at 100 m. intervals. Every part of the map shows the contours mainly in blue and brown, but those taken from less reliable data are given in grey.
The map has been compiled from data received from no less than twelve sources. The names follow the Survey of India spellings, as recommended by the Permanent Committee on Geographical Names, and the control of the map was based on the Survey of India triangulation with the height of Mount Everest given as 29,028 ft. (8,848 m.). No part of the map shows elevations of less than about 15,000 ft. (4,572 m.).
This map will be extremely interesting and valuable to glaciologists, showing as it does in considerable detail the large glaciers running off from the Everest massif in every direction.