Cuicuilco was as a farming village, built up around the ceremonial centre that contained the pyramid.
Population at the city’s peak is estimated at an impressive 20,000 people.
One of Mexico's most active volcanoes has erupted, yet again.
The charcoal is then preserved in the lava flow for a long time. Using this information, we can then deduce when the lava flow was active and formed this charcoal, thus telling us when the volcano erupted (and formed the lava flow).It is part of the Pacific Ring of Fire, the 40,000-kilometre volcanically volatile area home to about 75 per cent of the world's active volcanoes.Colima's recent eruptions have created some lava domes, made from lava that has built up around the volcano's opening.We tend to think of volcanoes as these explosive and tempermental forces of nature; it's not easy to predict when they will erupt, and when they do, it is almost impossible to stop them from destroying whatever is in their path.It's quite surprising, and interesting, when we learn about cases where the actual volcanic flows tend to be the most deadly, reaching maximum speeds of 700 km/hr depending on its composition.[less]The largest generate spectacular eruption columns reaching several kilometer height with ballistic impacts all over the cone and sometimes small pyroclastic flows by collapsing material of the eruption column.