El Castillo cave paintings more than 40,000 years old

Scientists say that some of the prehistoric cave paintings are more than 40,000 years old – four or five thousand years older than anyone had believed before. (ABC)

The Panel of Hands in El Castillo Cave near the village of Puente Viesgo is seen in this handout photo released June 14, 2012. REUTERS/Image courtesy of Pedro Saura/Handout