On August 20, 2025, a rockfall on the RN 205 near Chamonix in Haute-Savoie, France, resulted in the deaths of two young adults aged 23, a couple traveling with their parents. The incident occurred when a large rock detached and struck their vehicle. Two other passengers, the driver and his wife, were injured and hospitalized. The RN 205 was temporarily closed between Chamonix and Passy but later reopened after initial rescue and clearance operations. Authorities, including the prefecture of Haute-Savoie, have initiated an investigation to determine the sequence of events and assess the risk of further rockfalls in the area. The region is known for occasional rockfalls, and recent heatwaves have been suggested to contribute to mountain instability. Safety measures and the potential reinforcement of protective nets on mountain roads are under consideration. Local officials expressed concern about the incident, which has deeply affected the community.