Part of the glacier survey required us to dig pits to the surface of the glacier. Polar Pete had once seen someone dig two pits next to each other with about a foot between them. If dug at the correct angle then it is possible to have the sun illuminating the wall, highlighting the layers in the snowpack. So, once the science work was complete, Polar Pete set to work. We covered the first pit with bags and jackets and then crawled in to see the result. Thanks to Ant for the photo.