@JamesJenkins answer is pretty good. I'll add two points based on my experience as a forester. I think the 2nd point especially will help you find the info you're looking for, which is, TLDR: Forest stand maps can be very useful for planning woodland activities, serving as a great clue about where you'll find different types of forest structures and dynamics....
According to the Himalayan Journal, it was July 14th, 1985.
(7233 m -23,730 ft)
Wilkinson and Fotheringham 14 July
From east via
EXPLORING 'THAT VALLEY'-TERONG
by HARISH KAPADIA