Prof François Vellas, AIUTA President participates on november 25th, 2020 to the UNESCO International Workshop in Al Ula, Saudia Arabia, on invitation Prof Maria Gravari Barbas, President of UNITWIN UNESCO Chair. This workshop is dedicate to World Heritage Site. François Vellas met Dr Sameer M Yaghmour, Professor King Abdualaziz University to prepare new AIUTA research international cooperation on Archeological Silk Road with U3As and UNITWIN UNESCO and Saudia participation to next WSTC and AIUTA events 2020.