Andy Goldsworthy is a British sculptor, photographer, and environmentalist, whose art is specific to the natural locations he creates them in and made only from the natural materials he finds in them. This is putting it very technically: Goldsworthy is a solitary wanderer, absorbed in the moment, unworried about what comes after him. Using often only his bare hands, he creates fleeting works of art that often looks like nature itself could have created them. The opening has him calmly forming a spiral out of icicles using the heat of his hands to fuse the pieces together. As painstaking as this process is, his art is not meant to live forever. Once completed, it is handed over to the rivers and tides to do with it as they please. Directed, shot, and edited by Thomas Riedelsheimer, a German filmmaker, Rivers and Tides takes an in-depth look at Goldsworthy's ideas and craft, everywhere from upstate New York to his home village in Scotland. A calming and inspiring journey.