Gatherings of nearby clans took place four times per year - at the spring and autumn equinoxes and the summer and winter solstices.
Central locations that were visible for miles around were normally used for the gatherings. They were normally large enough to accommodate dozens of people for several days.
In a life of hunting, gathering, child raising, wood and stone working there was little time for socializing with clans who would normally be far enough away from each other to avoid interfering with food resources. Seasonal gatherings offered the chance to trade, spread stories, find a mate, learn, or simply be around a larger group of people.