Finding Altamira

Antonio Banderas was offered to visit the real Altamira cave, but he refused the offer. The cave has been closed to the general public since 2002 because public attendance was deteriorating the paintings. Banderas felt unfair to be granted a special permission and instead worked on the faithful replica which was built in a museum near the cave in 2001.

At the end of the movie, it is said that Marcelino Sanz de Sautuola died in 1889. He actually died on June 2, 1888.