One day in 1852 in British-ruled India, a young man burst into an office in the northern Dehra Dun hill town and announced to his boss: "Sir, I have discovered the highest mountain in the world!" Full article here.
That highest mountain in the world, known as Peak XV till then, is of course known to us as Mount Everest.
The man who made the euphoric declaration was Sir Radhanath Sikdar, a bengali mathematician who worked for the Surveyor General of India and joined the Great Trigonometric Survey in 1840.
And just over a 100 years later, on 29th of May 1953, the Everest was conquered by Sir Edmund Hillary and Sherpa Tenzing Norgay.
Sherpa Tenzing Norgay passed away on 9th May 1986 and today, his partner Sir Edmund Hilary breathed his last and joins him, scaling higher and higher peaks together, in the hereafter.