Sadly during the excellent demonstation it was very crowded and I was not able to capture a good picture. According to Wikipedia Nataraja means: Nata "act, drama, dance" Raja "king, lord" or Lord of Dance or King of Dance. ..."related to Shiva's fame as the "Lord of Dancers". These dancers explained that each hand gesture and sounds from ankle bells have specfic meaning from ancient and spiritual culture. According to https://www.m.timesofindia.com "The cosmic dance of shiva symbolises the interplay of dynamic and static devine energy flow, containing the five principles of eternal energy-creation, preservation, destruction, illusion and emancipation.