The layout of the Hida Mountains forms a large Y-shape. The southern peaks are the lower portion of the Y-shape, with the northern peaks forming two parallel bands separated by a deep V-shaped valley. It is one of the steepest V-shaped valleys in Japan. The Kurobe Dam, Japan's largest dam, is an arch dam located in the Kurobe Valley in the central area of the mountains. The western arm of mountains, also known as the Tateyama Peaks (立山連峰 Tateyama Renpō), are dominated by Mount Tsurugi and Mount Tate. The eastern arm, known as the Ushiro Tateyama Peaks (後立山連峰 Ushiro Tateyama Renpō), are dominated by Mount Shirouma and Mount Kashimayari.