most (not all, some contributions are QTVR-only due to historical reasons)
Javascript + HTML5 / WebGL
many, but depends on photographer's choice of file upload (newer event = more likely to work) and your device's capabilities. You may experience slow playback, distorted images or unexpected browser quitting if there is only limited memory/GPU power available.
Salmon Falls on the Deerfield River has been a destination for millenia. Once declared a place of perpetual peace between local Native American tribes for hunting and fishing, it now draws visitors from around the world. Recently declared a "NO TRESPASSING ZONE" by the Town of Shelburne for safety reasons, the Falls are still highly visible from boardwalks.