Kala Patthar (Kala Pattar) Standing at 5,644.5 meters (18,519 feet) above sea level, Kala Patthar represents far more than its literal translation of “black rock” might suggest. This remarkable vantage point in Nepal’s Khumbu region has become the most accessible window to Mount Everest’s grandeur, offering trekkers an unparalleled perspective of the world’s highest peak …