In this May 22, 2019 photo, a long queue of mountain climbers line a path on Mount Everest just below camp four, in Nepal. Seasoned mountaineers say the Nepal government's failure to limit the number of climbers on Mount Everest has resulted in dangerous overcrowding and a greater number of deaths. (AP Photo/Rizza Alee)
Mount Everest in Nepal faced its deadliest tourist season this May.  AP Photo    

Why so many people died on Everest: surely, in 2019, mountaineering is safer than ever?