A 50-year-old Colorado woman out hiking in Rocky Mountain National Park was killed when she fell about 40-50 feet down Deer Mountain, according to park officials.

The calendar might be turning over to October, but at Bryce Canyon National Park it also means winter isn't too far off.

Across the National Park System, habitat restoration efforts seem to be ongoing daily, and specific projects can take years to complete. One such project is ongoing in Yellowstone National Park, where crews are working to restore native Yellowstone cutthroat trout to streams.

Come Monday, you can send Kenai Fjords National Park around the country. At least figuratively, thanks to a new stamp from the U.S. Postal Service.