After the April avalanche that killed 16 Sherpas on Everest, many people assumed no one would return to the Nepalese side of the mountain this year.

Two climbers, from the U.S. and China, have flown by helicopter above the Khumbu Icefall, therefore passing the greatest objective danger on the mountain. They flew from Base Camp to camp two.

Tourism ministry official Dipendra Poudel said, “There are also other climbers who have shown interest to continue their expeditions this year.”

The Chinese climber is accompanied by six Sherpas and is attempting to climb Everest. The American mountaineer attempting Lhotse, alone. Both peaks share camps to camp three. “This is the first time we’ve taken climbers up to Camp 2. Earlier we made such flights to transport only equipment or in cases of emergencies,” said Ramesh Shiwakoti from Fishtail Air, which flew the climbers.

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The government has encouraged climbers to continue their expeditions.

The Everest season lasts until May 25, after which conditions are too dangerous.

For more on the April 18 avalanche on Everest see here.