A tourist has posted “staggering” photos of himself and his wife at the same spot in the Swiss Alps almost exactly 15 years apart, in a pair of photos that highlight the speed with which global heating is melting glaciers.

Duncan Porter, a software developer from Bristol, posted photos that were taken in the same spot at the Rhone glacier in August 2009 and August 2024. The white ice that filled the background has shrunk to reveal grey rock. A once-small pool at the bottom, out of sight in the original, has turned into a vast green lake.

“Not gonna lie, it made me cry,” Porter said in a viral post on social media platform X on Sunday night.