kcb_outdoor_600

Great Outdoors: Explore by Kristin Cronin-Barrow
https://www.sweetshoppedesigns.com/sweetshoppe/product.php?productid=27888&cat=0&page=1
Photo by me
This is Cave passage (Prohodna) in Bulgaria - very beautiful place.
Another name is "The eyes of the God"
http://en.wikipedia.org/wiki/Prohodna