Back on familiar ground today as we back track towards Namche and take a higher trial through the woods to Khumjung (3790m). In the afternoon we take a nice steep acclimatisation hike to Kunde peak at 4200, almost half way to the top of Everest! We also stop at the Kunde hospital where Bob's son was treated two years ago after getting sick here while trekking.

At Sunshine lodge, our hotel for the night, dinner is a feast, noodle egg soup, steak and chips, and apple pie. The steak is more like a burger, but so good we order another one. We're wondering when we're going to hit the ceiling of our food budget!

David Breashears has also checked in, and shows us a demo of his GlacierWorks project. He's comparing historical images of Himalayan glaciers and asking what glacier melt can tell us about climate change and the challenges that must be met as water availability and land-use change.