This is one of the upper pools on the Batson River at Emmon’s Preserve in Kennebunkport, Maine, USA. Nothing spectacular but an interesting place for a panorama with the fall foliage. iPhone SE with the Sirui 18mm ultra-wide lens, held in portrait position and swept from left to right through only a portion of its 360 degree reach. Smart HDR was on in the Apple Camera app, but I have no idea if it works with sweep panorama. Processed in Apple Photos.