Expeditions to send huge rubbish bags to help clean Mount Everest
Mountaineering expedition organisers in Nepal are sending huge bags with climbers on Mount Everest during the spring climbing season to collect rubbish that then can be winched by helicopters back to the base camp.
Dambar Parajuli of the Expedition Operators Association of Nepal said bags have already been sent to the base camp to be carried by climbers, guides and porters to higher elevations.
Each bag can hold up to 176lbs of rubbish and can be hooked to helicopters at Camp Two to be flown back to the base camp.
The helicopters, after dropping off supplies and equipment at the camp located at 21,000 feet, generally fly back empty.
Hundreds of climbers and their guides are expected to attempt to scale the 29,035ft peak during the spring season.
Climbers generally arrive in April and attempt to reach the summit in May, when weather conditions are favourable.
They leave behind a lot of rubbish.
Climbers also say it is urgent to remove the rubbish left by previous expeditions at Camp Two, which was set up in 2014 and 2015 when tragedies forced an early end to the climbs.
The 2014 season was cancelled after 16 Nepalese guides were killed in an avalanche, and the following year an earthquake-triggered avalanche swept the base camp, killing 19 people.
Veteran guide Russell Brice said the tents and supplies that were left behind have to be removed.
Doing it by helicopter means Sherpa guides do not have to risk carrying heavy loads of rubbish through the treacherous Khumbu Icefall to the base camp.
Mr Brice, one of the leading expedition organisers, said that for rubbish left higher up the mountain he was offering Sherpa guides carrying equipment up for their clients to bring back bags filled with rubbish to Camp Two.
They would be paid two US dollars (£1.60) per kilogram (2.2lbs), and would use bags that can hold 5kgs (11 pounds).