https://timesofindia.indiatimes.com/etimes/trending/lost-sunken-silk-road-city-found-under-kyrgyzstans-largest-lake-what-happened-to-the-important-trade-center-and-connecting-link-between-china-and-the-mediterranean/articleshow/134761133.cms
Under Lake Issyk Kul in Kyrgyzstan. The city name is unknown, and so is how it was submerged.