中央山脈
During their first expedition the Akmana Field Party prospected the tributaries of the Arrabundio and then trekked across a spur of the Central Mountain Range to sample the Upper Karrawaddi River. Retracing their steps to the Arrabundio they then headed out across another spur of the Central Mountain Range to the Junction of the Yuat River with the Jimmi and Baiyer Rivers, again without finding gold in sufficient quantity. Returning to Madang at the end of December 1929, several of the party went back to Sydney to obtain instructions from the Akmana Gold Prospecting Company.