Lantau Mountain is high on the southwest and low on the northeast. Its main peak, Phoenix Mountain has an altitude of 935 meters, and it's the second highest peak in Hong Kong. There is only a small piece of flat land along the stream which runs from the mountain. Tai O Town in the southwest is the most populated place on the island. It became a popular recreational area during the 1970s for Hong Kong residents and is very popular at weekends and holidays.