Alexander Macmillan Heron was a Scottish geologist who became Director of the Geological Survey of India. He participated in the 1921 British Mount Everest reconnaissance expedition following which he

Kharta is a region in Tibet lying to the east of Mount Everest and centred on the Kharta valley and Kama valley. The 40-kilometre Kharta valley starts at the col at Lhakpa La at the head of the Kharta