Conversation so far:
What year(s) was Mallory in Asia?
1921 and 1922
Who did Mallory climb with in 1921?
Guy Bullock, and E. O. Wheeler
Was the 1921 British Reconnaissance Expedition successful in the climb?
Under Mallory's leadership, and with the assistance of around a dozen Sherpas, the group climbed several lower peaks near Everest.
What else can you tell me about the 1921 British Reconnaissance Expedition other than if it was successful
It was organised and financed by the Mount Everest Committee.
Was 1921 British Reconnaissance Expedition the only climb in Asia?
No, Mallory returned to the Himalayas as part of the party led by Brigadier General Charles Bruce and climbing leader Edward Strutt, with a view to making a serious attempt on the summit.
What year was the second British Reconnaissance Expedition?
1922
What else happened at Rongbuk Glacier besides it's discovery?
After circling the mountain from the south side, his party finally discovered the East Rongbuk Glacier—the highway to the summit now used by nearly all climbers on the Tibetan side of the mountain.

Question: Was there other things he discovered?
Self-contained rewrite: Was there other things George Mallory discovered during his climbs in Asia besides the Rongbuk Glacier?