How did avalanches affect Mount Everest climbing seasons in 2014 and 2015?

Avalanches significantly disrupted Mount Everest climbing seasons in 2014 and 2015, leading to tragic loss of life and the effective closure of the mountain for those periods.

• 2014 Season: On April 18, an avalanche in the Khumbu Icefall killed 16 Sherpas, marking the deadliest single day in the mountain's history at that time. Following the disaster, Sherpas decided not to continue climbing, which effectively ended the spring season on the Nepalese side of the mountain.12
• 2015 Season: On April 25, a massive earthquake in Nepal triggered avalanches on Everest, including one that struck Base Camp. This event resulted in 19 deaths and caused severe damage to the route through the Khumbu Icefall. While there was initial discussion about repairs, the route was deemed impassable, ending the south-side season. Additionally, Chinese officials canceled the climbing season on the north side. Consequently, 2015 became the first year in over four decades that no one reached the summit.132