here in the 1980s. He found around 1300 artifacts including small tools, large cutting tools such as chaperos, polyhandros, sparoids. His radio dating age is estimated at 7 lakh 97 thousand years. The Archaeological Survey of India has named these mounds 16R. The Archaeological Survey of India will conserve these earthen mounds for the first time in its history. Cleary Gaylard of the Prehistoric Department of the National Natural History Museum, Paris, and his colleagues conducted research on 16R. The history of Didwana is said to be about 2000 years old based on inscriptions. According to an inscription, between 43 AD to 255 AD, a city was established in the name of "Abhanagri", which was under the Kushan Empire, 3 km east of the present city. In the course of time, this city was destroyed by the attacks of the Kshatrapas. According to another inscription, Nagabhatta II donated 1/6 of the Didwana region to a Brahmin in 843 AD in the ninth century. Dedushah, son of Prime Minister Sesharam of the same region, resettled the city at the present place under the name Deduvanak, which was later called Didwana. After this, its rule passed to the Pratiharas of Mandore. The statue of Pratihara Kalin Narayan was received from Didwana which is currently kept in Jodhpur Museum. During this time, Didwana also became the center of Jainism and Hinduism, but due to the Muslim invasions, the ancient temples were destroyed here. Even today, in the old city, there are pieces and sculptures of temples found in the excavation. In the tenth century, the Jain monk, Jineshwar Suri, composed the story in Didwana. Renowned Jain scholar Sridatta Suri traveled to Didwana and preached to Yashobhadra, the ruler here. Yashobhadra constructed a huge Jain temple named Chaubisa Himalaya in Didwana which was in existence till 1184 AD, Somprabhacharya mentions this district in 1184 AD. Jain statues found in the excavation are proof of this. Didwana is also mentioned in the Sakalatirtha Mala, composed by Siddhasen Suri in the twelfth century. After the Battle of Tarain, this area passed into the hands of Muhammad Ghori, after him Qutubuddin Aibak, Iltutmish and Razia Sultan . Didwana was also captured by the kings of Gujarat for salt. Maharana Kumbha of chittorgarh conquered it and imposed a tax on salt which is mentioned in the inscription of Kirti Stambha. The Mughals established their police stations here. During