Video captured by Piyali Basak during climbing with Gopro The sedimentary sandstone rock of the Yellow Band is a distinctive feature of the Lhotse Face which requires about 100 meters of rope to traverse it. This is the first rock a climber touches on the route up Everest. It becomes very obvious when one has reached this point in the climb—one's crampons hit hard rock. The top of the yellow band is at 25,000 feet.