Climbers make their way up a snow ridge.
At Advance Base Camp, binoculars and long lenses for our cameras came out, and what looked like tiny specks on the snow fields of Everest were our team mates working their way up to high camp. Meanwhile the debate down at Advance Base Camp continues. There are the sun goggles found in Mallory's pocket, indicating he took them off at nightfall - long after he was seen by Noel Odell heading for the summit. A British flag to stake on the summit, and stones from the top of the world to bring back to geologists. On this final leg of our research project, there is a small piece of the puzzle that the summit climbers may be able to clarify.