Is Yellowstone/Teton National Park screensaver designed to run on Windows 10?
The screensavers provided are in ZIP format. After extraction you'll have a pack of JPEG files that can be used as a screensaver with the help of another application if the default functions of Windows don't provide this.
You can browse the applications on Software Informer's result list for a compatible application: http://software.informer.com/search/photos+screensaver