The Kyetrak Glacier (also known as the Gyabrag Glacier) runs along the Northern slope of Cho Oyu. It was first explored in 1921, by the British Reconnaissance team, and marks a commonly used route to Advanced Base Camp on the mountain. It is referred to as the “Tichy Route”, a nod to the Austrian team that made the first successful ascent.
Photography 1921: Major E. O. Wheeler, Royal Geographical Society
Photography 2009: David Breashears, GlacierWorks