Ujjain: The inauguration ceremony of Rock Art Society of India’s (RASI) 23rd conference was organised on Friday at Hotel Ashray. The conference was inaugurated by lighting of lamps by mentor Saskar Bharti Yogendra Vashishtha, Dr Vyankteshvarlu and Dr Arvind Jamkhedkar and other invitees at Hotel Ashray. The programme was presided over by Dr Bhagwatilal Rajpurohit. The event is being organised in birth centenary year of archaeologist Padmshri Dr Vishnu Shridhar Wakankar.