May 29 (no impression of the vegetation at all. Also right about here we started climbing across the Brooks Range. Once into the range clouds obscured the ground for most of the way. Caught occasional glimpses of the ground. The foothills are still more than 90% covered in snow. This cover increased upwards towards the coast. We came out of the clouds at the upper Yukon River. Cover here to 95% & mp. This situation prevails at Barrow. Only edges of rivers & the ocean show any melting at all + this very slight. Cape Thompson: Made 3 passes by cliffs at Thompson. They are estimated at 800 feet high. Little bird life around them, only a few kittiwakes were seen flying near them. We was still m to shore along this stretch. No signs of activity at Thompson, no buildings, no equipment & no H-4-combo. Disappointing. There are tremendous cliffs & headland near Lushunne & from there south quite a ways. Should be good harbours. - We did not see these because of rough air.