Mount Everest CHAOS: Alarm at microplastics ‘from explorers’ polluting mountain

Snow at Base Camp and streams along the trekking routes close to the Khumbu Glacier are also affected. Samples collected revealed substantial amounts of polyester, acrylic, nylon and polypropylene fibres. The materials are being used to make high-performance clothing worn by climbers, as well as their tents and ropes.