baɪ ðə θˈɜːd mɪlˈɛniəm bˌiːsˈiː ɹᵻfˈaɪnd ɹˈɑːk ˈæsfɔlt wʌz ɪn jˈuːs ɪnðə ɹˈiːdʒən, ænd wʌz jˈuːzd tə wˈɔːɾɚpɹˌuːf ðə ɡɹˈeɪt bˈæθ ɪn moʊhˈɛndʒoʊdˈæɹoʊ.
By the 3rd millennium BC refined rock asphalt was in use in the region, and was used to waterproof the Great Bath in Mohenjo-daro.