[2][failed verification][3] Olsobip, one of the northernmost settlements in the district, is probably one of the wettest places on earth,[citation needed] a fact that cannot be established scientifically, due to the absence of a weather station.

[2] The beginning of the Star Mountains is the southernmost point in the district that is more than a few hundred metres above sea level.

It shares an international boundary with Papua province of Indonesia in the west and borders Middle Fly District in the south.

[2] The southern area of North Fly District is a massive plain, and the highlands begin around Tabubil, at the foot of the Star Mountains.

[2] The total land mass of the North Fly District is 13,138 km²,[2] slightly larger than Enga Province.

[2] Kiunga holds the main port of the province,[2] and ships a lot of supplies in, and copper from Ok Tedi Mine, rubber and lumber out.