Departure from the meeting point in Seville and travel towards Aracena. A walking tour through beautiful streets, leading to the entrance of the Grotto of the Wonders - natural caves. There are impressive geological formations such as stalactites and stalagmites formed over thousands of years. Next, a visit to Dehesa de Sierra Morena, a biosphere reserve from which the inhabitants of this area draw on its natural resources. The program includes several stops at historical sites, such as the medieval castle of Aracena and the Almonaster la Real mosque. Free time for lunch. Then a visit to Rio Tinto, a mining complex known for its mines and the reddish color characteristic of the water of the Tinto River flowing here. Mining activities in the area have made the surroundings resemble the landscape of Mars. Visit to the Rio Tinto mines. Return to Seville.