Nepali climbers make history by becoming first to scale K2 peak in winter Updated: Updated: K2 is the second highest mountain in the world. Share Article AAA Nepalese mountaineer Sona Sherpa posing with the banner of Seven Summit Treks on the top of Mt. K2, located in Pakistan's Karakoram range along the Chinese border that leads into the Himalayas on January 16. | Photo Credit: AP K2 is the second highest mountain in the world. Pakistan on Sunday felicitated a team of 10 Nepali climbers for making history by becoming the first to scale in winter the world's second highest mountain K2, considered as the world's most dangerous and challenging peak.