by an expedition consisting of Mr. A.P.L. Nunes (GMD - Geologisch Mijnbouwkundige dienst) J.P. Schulz and J. Tawjoeran (both from LBB - Lands Bosbeheer), and S. Ligori from the Suriname Museum. The indigenous expedition member John Tawjoeran hoisted the Surinamese flag (the flag with five stars) in a tree.

The expedition arrived at the Kayser Mountains airstrip on June 29, 1963. From there, they followed the Zuid River by korjaal Surinamese canoe) to its confluence with the Lucie River, which they then followed upstream for approximately