Maharashtra news: Rising water level in Lonar crater lake submerges ancient temples, prompts Bombay High Court action and expert study by IIT-Bombay. Mumbai: The rising water levels at the Lonar Crater, also known as Lonar lake, in the Buldhana district of Maharashtra has come as a major cause of concern. The Lonar Crater/Lake is listed as a National Geo-heritage Monument and Ramsar Site..Lonar lake a gift from the sky.