A sketch map of the central highlands of Papua New Guinea showing the headwaters of the Purari and Yuat Rivers. Based on a survey and expedition undertaken by Ken Spinks of New Guinea Goldfields Ltd during the Australian mandate period. Spinks' route is marked with a red line. Villages and landing grounds are also noted on the map, and tribal names are in brackets. The brown hill-shaded area is based on photographs, compass bearings, and expedition notes.

The original manuscript map on which this map was based has remarkably survived in the collection of the National Library of Australia.

Printed colour. [AUNZ2962]