During the Inca era , the winter solstice marked the start of a new year , and according to 17-century writer and historian Inca Garcilaso de la Vega , it was the main celebration of the year .
Incanak pachanxa , machaq mara qalltäwinwa , Inca Garcilaso de la Vega , qillqiri ukhamarak historiador khä siglo XVII ukanxa maran nayïr phunchhäwipanwa .