Mount Gambier is picturesque, surrounded by the ancient volcanic lake, Mount Gambier crater, Lake (Mount Gambier Crater Lakes), which consists of three major craters, the largest of which is Lake Browne (Browne's Lake), Valley Lake (The Valley Lake), Yangjiu Lake (Leg of Mutton Lake) and the world-renowned Blue Lake (The Blue Lake), are now left with only Blue Lake and Valley Lake due to changes in weather and geology, while Sheep leg Lake and Lake Browne have dried up in the 1960s and 1980s.