Gangkhar Puensum is a mountain in the Himalayas range, in Bhutan and Tibet. It is the 40th highest mountain in the world. It is also known as Kangkar Pünzum. The name means "White Peak of the Three Spiritual Brothers". No one has ever made it to the top of Gangkhar Puensum. It is the highest mountain in the world that has never been climbed.