Las Lajas Sanctuary is a basilica church built in the most peculiar site – inside the canyon of the Guaitara River in Ipiales, Colombia. Its construction lasted for 33 years from 1916 to 1949. There was a claim that an apparition of the Virgin Mary was seen in the area. The miraculous image on the stone is still visible today.
http://en.wikipedia.org/wiki/Las_Lajas_Sanctuary
