Pacific Ocean. The site covers a total area of 100 hectares, and is the largest Late Archaic construction in the Norte Chico region. The three earthwork mounds on the large site are believed to be remains of pyramidal-shaped structures. Two standing stones, known as huancas, also survive. Excavation in 2007 revealed a structure believed to be a temple, of a design similar to, but predating, the Mito architectural tradition seen in the Peruvian highlands. In addition, later research in the Fortaleza and Pativilca valleys has found evidence of maize cultivation, as well as fourteen other domesticated species of fruits and vegetables. This suggests that agriculture may have been more important to the development of Caral-Supe civilization than previously thought, as it was for other independent civilizations of the world, such as Mesopotamia, Egypt, China, and India. c. 3700 BC: Lothal: Indus Valley trade-port city in India. c. 3650 BC–3000 BC: Minoan culture appeared on Crete. c. 3200 BC/3100 BC: Helladic culture and Cycladic culture both emerge in Greece. The 3rd millennium BC included the following key events: c. 3000 BC: Unification of Upper and Lower Egypt. c. 3000 BC: First evidence of gold being used in the Middle East. c. 3000 BC: Nubian A-Group, Ta-Seeti "kingdom" came to an end, possibly due to raids by Egypt. c. 3000 BC–2000 BC: Vessels from Denmark are made; they are now at National Museum, Copenhagen. c. 2890 BC: Second Dynasty of Egypt, reign of Hotepsekhemwy. Syria: Foundation of the city of Mari (29th century BC). Semitic tribes occupy Assyria in northern part of the plain of Shinar and Akkad. Phoenicians settle on Syrian coast, with centers at Tyre and Sidon. Beginning of the period of the mythical Sage Kings in China, also known as the Three Sovereigns and Five Emperors. c. 2879 BC: Rise of the mythical Văn Lang Kingdom and the Hồng Bàng dynasty in northern Viet Nam. c. 2800 BC–2700 BC: Harp Player, from Keros, Cyclades, was made. It is now at the Metropolitan Museum of Art, New York. Iran: Creation of the Kingdom of Elam. Germination of the Bristlecone pine tree "Methuselah" about 2700 BC, one of the oldest known trees still living now. c. 2686 BC: Third Dynasty of Egypt, reign of Sanakhte. c. 2613 BC: Fourth Dynasty of Egypt, reign of Sneferu. c. 2600 BC: Founding of the Chalcolithic Iberian civilizations of Los Millares and Zambujal. 2600 BC: