Here is an example summary of this reading selection:

“Hidden Gems of Pebble Creek,” a one-minute video by the National Park Service, shows ice forming on rapidly running water in Yellowstone National Park. The camera begins by panning over the creek as it runs through a forest, then zooms in to show running water forming icicles hanging from the sheet of ice forming on the surface of the creek.

Your summary will differ from this one in the way it is written, but it should include roughly the same information.