I took that pic on a hike up to Everest Base Camp. This one was at around 10k feet, so pretty low by their standards. I couldn't find the pic of the guy carrying 5 sheets of 3/8" plywood on his head at around 15k feet. In flip flops. The Nepalese that live at that altitude are pretty amazing.
We also saw another guy carrying around 300# of apple juice, orange juice, and sprite. He at least had some old tennis shoes on.