"Part of the ongoing effort to keep the mountain clean is the removal of oxygen bottles from the South Col. We pay our Sherpas a bounty for any old bottles they bring down from the Col. There has been a lot of hype in recent years about Everest being a pigsty with trash everywhere. These oft repeated assertions are quite simply tommyrot. A few 'well set-up' photos have created a powerful image in the public's imagination."
— Charles Corfield