Snowy Hoo Doos henrymowry 12 years ago The rock formations are called Hoo Doos in Bryce Canyon National Park. Photo by Kuang-Yu Jen. Tweeted by the US Department of the Interior, 3/3/14. Share this: Email a link to a friend (Opens in new window) Email Share on Facebook (Opens in new window) Facebook Share on Pinterest (Opens in new window) Pinterest Share on X (Opens in new window) X