Iranian mountain climber Azim Gheychisaz traveled to Nepal on Friday to climb Mt Lhotse.

By 2014, he has successfully completed ascent to 13 peaks out of 14 peaks over 8'000. He has done all of his ascents without supplementary oxygen, except Everest.

The eight-thousanders are the 14 independent mountains on Earth that are more than 8,000 meters (26,247 ft) high above sea level.

 All eight-thousanders are located in the Himalayan and Karakoram mountain ranges in Asia. They are the mountains whose summits are in the death zone.

Lhotse, the fourth highest mountain in the world, means “South Peak” in Tibetan.