Three Spanish Tourists Die in Swiss Canyoning Accident, Fourth Missing

Canyoning in the Provence-Alpes region, France, on 9 Sep 1999. Pascal Rondeau/Allsport

ZURICH—Three Spanish tourists have died and a fourth is missing after canyoning in a river gorge in northern Switzerland.

The four men, who have not been identified, went missing in the Parlitobel Gorge in the canton of St. Gallen just before 1700 GMT on Wednesday.