Not every national park across the country experiences winter snow and ice, but some of those that do are beginning to see some dramatic changes to the landscape. Social media sites offer an easy way to enjoy some views of the scenery, but we realize not all of our readers are users of Facebook, so here's a brief sample for your early winter armchair travels.

The Facebook page for Canyonlands National Park in Utah posted the following postcard-worthy image on December 26 with the caption, "The red rocks of Canyonlands are now wearing white raiment. Christmas blessed the park with three to four inches of new snow." 

At Great Sand Dunes National Park and Preserve in Colorado, the graceful contours of the park's snow-covered dunes offer a spectacular setting for a photo posted on the park's Facebook page by Patrick Myers. His caption notes, "In the midst of a sometimes chaotic world, we wish you joy and peace this holiday season and throughout 2015 - from the staff of Great Sand Dunes National Park and Preserve."

The North Rim of Grand Canyon National Park in Arizona is now accessible only by cross-country skis or snowshoes until late spring, but you can still enjoy this view, posted by Steve Bridgehouse, North Rim winter maintenance worker, on the park's Facebook page. 

In Montana, Glacier National Park's Facebook page noted on December 28 that "the winter storm seems to have passed through and on its way dropped several inches of wonderful light powder near Park Headquarters. It's a perfect day to come and enjoy winter in the park."

Finally, this scene from the Facebook page for Arches National Park in Utah features a photo by Bill Church; the caption notes, "This is why it's called the "cold desert."