Lake Brenets, a long, winding lake on the Swiss-French border, is all ‌but drained and has been unnavigable for more than a week amid a prolonged drought that has hit waterways across Europe.

The lake is normally thronged with campers, swimmers and canoeists in the summer, while three ​boat companies typically ferry thousands of tourists across it each season.

But this year ​it is virtually deserted as water levels in the River Doubs, which ⁠feeds it, have fallen sharply following months of scant rainfall and three successive heatwaves, the ​latest of which is still under way.