Welcome to Nature Pic of the Day! View a new, gorgeous, picture of nature every day! Tell us what you think about the photos, leave a comment and rate the photographs.
Perched Rock:How long before this boulder falls off the cliff? This huge rock is a glacial erratic. Found in California's Lassen National Park, park scientists estimate that it was left perched on the cliff edge by a glacier about 18,000 years ago. If it has been sitting there so long without falling, it will probably be there for a while longer!