France's highest mountain has shrunk a metre since 2017: Experts

France's highest mountain, Mont Blanc, has reportedly shrunk by nearly a metre since the last official measurement taken in 2017. Geographical experts measured the mountain at 4,807.81 metres during an expedition in mid-September, lower than their last published estimate of 4,808.72 metres in 2017. It has been losing an average of 13 centimetres in height annually since 2001, experts said.