This is the spanish Unesco card i didn't know i had. I mean, i knew i had the card, i just didn't know it was from an Unesco site. I've got it before the postcrossing era.
Siega Verde is an archaeological site in the municipality of Villar de la Yegua, in the province of Salamanca, Spain. It was added to the Côa Valley Paleolithic Art site (Portugal) in the World Heritage List in 2010.
The site consists a series of rock engravings, discovered in 1988 by professor Manuel Santoja y Rosario Pérez, during an inventory campaign of archaeological sites in the valley of the Águeda river. Subjects include horses, goats, bulls and deers, among the most common ones, as well as bisons, reindeers and the whoolly rhinoceros, which were not yet extinct at the time.
The engravings date to the Gravettian culture of the Upper Palaeolithic (c. 20,000 years ago). There are also more recent, anthropomorphic representations, dating to the Magdalenian age (c. 12,000 years ago). There is a total of 94 panels spanning some 3 kilometers of rock. - in: wikipedia