The Shoton Festival
Shoton is the transliteration of two Tibetan words which mean 'Yoghurt Banquet'. The festival originated at Drepung Monastery, as a celebration to mark the end of the monks' Yarné, their hundred day summer retreat. It begins on the new moon marking the end of the sixth Tibetan month. It includes performances of the musical dance dramas known as Ache Lhamo (Tibetan Opera). In other parts of Tibet the dances are part of the harvest festival, and yoghurt would be served at the feast which followed. The Ache Lhamo dances are attributed to Thangtong Gyalpo, also known as Chaksampa, a lama of the fourteenth and fifteenth centuries, also famous for building iron chain bridges in many parts of Tibet. The popularity of this festival was such that the government decreed it an annual event of a further five days, established at the Norbulingka. There are performances by all the established companies from throughout Tibet, some of which can perform the whole Lhamo repertoire, and some who specialize in one particular drama. Some of the stories are derived from Indian Buddhist legends, while others relate incidents in Tibetan history.
During the festival all the residents of Lhasa go out and gather in the Norbulingka Park. They set up beautiful tents and hang curtains there. They bring cakes, sweets, dairy products, yak-butter tea and have wonderful picnics. Professional and amateur Tibetan opera troupes gather in the Norbulingka Park and perform various Tibetan operas.
http://www.everesttrekking.com/tibet/ShotonFestival.htmlApparently, part of the reason for the retrest is so that the monks do not go out and step on and killing the insects that come out during those times.
Shoton Festival originates from the 11th century. It had been exclusively a religious observance until the 17th century when the Great 5th Dalai Lama introduced the Tibetan opera into the celebration, making it a nationwide gala. Being the largest and most mysterious festival on the roof of the world, Shoton Festival serves as a showcase to rooted tradition, appealing culture and great piety of the Tibetan people. Global travelers, who urge to discover more than just turquoise lakes and snow capped mountains on this forbidden land, are drawn to Tibet at this time of year.
The festival mainly consists of 3 parts - Great Buddha Display, Tibetan Opera Show and Horsemanship & Yak Race Show. In combination they represent the best of Tibetan religion, culture and tradition.
http://shotonfestival.com/