The Sharjah Archeology Authority organized, within its biweekly lectures; On the Zoom platform, on Monday, September 27, 2021, a lecture was given by Dr. Risa Tokunaga, a visiting professor, participating in the Research Center for Ancient Civilizations and Cultural Resources at Kanazawa University, under the title: “Arab-Islamic Inscriptions in the Wadi al-Kharqa region in the Kingdom of Saudi Arabia”, in which Dr. The site of Wadi al-Kharqa and the characteristics of the Islamic inscriptions in it, and mentioned its most important characteristics with the introduction of the long lineages, and at the end of the lecture a simplified definition of the ancient inscriptions and rock drawings in and around Wadi al-Kharqa.