10.50 Stopped to rest after a bad climb through low rather dense forest - following a well used native track - with σ and ζ Papuan forest tracks in it going our way - have seen these since we first picked up this track. Altitude 3310 - now onto edge of grass and scattered clumps of forest and trees and view back to ridge north of Habbema from which I viewed this two days ago. 11.00 Left - going SE crossed to east of ridge and followed a grassy valley - tree ferns - one half way up slopes second growth forest regenerating after fires evidently. Several big twenty-foot diameter boulders had rolled down into bottom of valley - when entering this valley over a well worn track which in valley has evidently been repeatedly washed away by landslips so trail new here. 11.35 Reached a hole in ground - as though an underground cavern had collapsed. One steep rock wall - native camp under its shade. Tox - ahead - saw a pair of brown falcons on wall but they flew before I arrived and I saw but one flying about - altitude 3380 - rested here. 11.45 Left 12.00 Reached river where had lunch 12.55 Started on up hill - where many woodcock leaving - native track well pronounced. 1.20 Top of ridge 3520 m. 1.40 Left top 2nd ridge 3560 alt. 1.50 Alt. 3640 m. top 3rd ridge - view of 3rd dome (or dome behind it as it proved) deep valley and bluffs beyond.