Southwest of Mount Popa is Taung Kalat (pedestal hill), a sheer-sided volcanic plug, which rises 657 metres (2,156 ft) above the sea level. A Buddhist monastery is located at the summit of Taung Kalat. At one time, the Buddhist hermit U Khandi maintained the stairway of 777 steps to the summit of Taung Kalat. The Taung Kalat pedestal hill is sometimes itself called Mount Popa and given that Mount Popa is the name of the actual volcano that caused the creation of the volcanic plug, to avoid confusion, the volcano (with its crater blown open on one side) is generally called Taung Ma-gyi (mother hill). The volcanic crater itself is a mile in diameter.