The three most important dolmens (or passage mounds) in Spain—Cueva de Menga, Cueva de Viera, and the Tholos of El Romeral—are some of the largest in the world. The largest stones used in their construction weigh one hundred and eighty tons, and were transported from at least a mile away. The sites, which are located near the town of Antequera, are believed to have been established around 3700 B.C.—making them a contemporary of many famous megalithic sites such as Stonehenge. Many of the walls feature anthropomorphic illustrations. Menga is aligned with the summer solstice, and El Romeral shares several traits and characteristics with tholos dolmens discovered on Crete, which suggests contact with the Minoan civilization.
Kemo D. 7