I took this shot while hiking the other day. While a photographer used to have to carry a big camera, tripod and cable release to make images like this, now they can be made with an iPhone alone. Simply take a picture in the “live” mode. Be sure to hold the camera steady for a few seconds before and after taking the image. Then when you view the image on your phone, swipe up. This will open a menu of effects. Select “long exposure” and you’re done. Or, if you need a bit more exercise, go ahead and haul all the gear into the woods with you.