Editorial photo #13906741 Human Interest
15th Water Critical Mass In Krakow
Kayaks participate in the 15th Water Critical Mass event on the Vistula River in Krakow, Poland, on June 21, 2026. Water Critical Mass is a recurring event where participants build their own boats, rafts, and kayaks, and navigate them down the Vistula River. (Photo by Klaudia Radecka/NurPhoto)
