Spring, Yellowstone National Park. 春天，黃石國家公園。

Janell Duncan / UGC
TODAY Travel - Travel photo of the day: A grand spring at Yellowstone
http://todaytravel.today.msnbc.msn.com/_news/2011/12/07/9274856-travel-photo-of-the-day-a-grand-spring-at-yellowstone?chromedomain=photoblog