This study examines the impact of climate warming on rockfall activity in high-mountain regions, specifically at Täschgufers in the Swiss Alps. By analyzing growth-ring records from 375 trees damaged by past rockfalls, the researchers found that rockfall activity has increased significantly over the past century, particularly since the mid-1980s. The correlation between rockfall frequency and summer air temperatures is significant, with warmer temperatures leading to more frequent and larger rockfalls. The study highlights the importance of long-term observations in understanding the complex relationship between climate change, permafrost degradation, and rockfall activity. The findings suggest that continued warming will likely result in increased rockfall activity, posing significant risks to mountain communities and infrastructure. The Täschgufers site serves as a benchmark for future research, providing valuable insights into the seasonality and trends of rockfall activity in similar high-mountain environments.This study examines the impact of climate warming on rockfall activity in high-mountain regions, specifically at Täschgufers in the Swiss Alps. By analyzing growth-ring records from 375 trees damaged by past rockfalls, the researchers found that rockfall activity has increased significantly over the past century, particularly since the mid-1980s. The correlation between rockfall frequency and summer air temperatures is significant, with warmer temperatures leading to more frequent and larger rockfalls. The study highlights the importance of long-term observations in understanding the complex relationship between climate change, permafrost degradation, and rockfall activity. The findings suggest that continued warming will likely result in increased rockfall activity, posing significant risks to mountain communities and infrastructure. The Täschgufers site serves as a benchmark for future research, providing valuable insights into the seasonality and trends of rockfall activity in similar high-mountain environments.