Papua New Guinea's Sepik River carving its way out of the central highlands, the Kokoda Track's WWII-era 96km traverse, and the Goroka Show's tribal sing-sing display 100+ groups in painted dress.
Dry season the best window for highlands trekking, Goroka Show in mid-September the country's biggest cultural display, and Mount Hagen Show in August.
Highlands cultural shows peak with Goroka and Hagen, and the Sepik mask festivals across the river villages reach their most active calendar moment.
Wet season with afternoon storms, Sepik villages reachable by river, and Rabaul's Mask Festival in mid-July aside, the rates drop across coastal lodges.
National Mask Festival in Rabaul brings duk-duk dancers from across East New Britain in one of the country's most photogenic small-scale festivals.