With the rise of Chichen Itza around 600 AD, Coba began to lose its position as a city of power and influence, and by 1000 AD it had lost most of its political prowess, but was still regarded as being important for symbolic and ceremonial reasons
Coba is the nexus of the largest network of stone causeways in the Mayan world in Mexico, especially during the late classical period from 600 to 900 AD. Its population is believed to have peaked at 50,000 inhabitants during this time, but some occupation was still in existence up until the arrival of the Spanish in the early 16th century