Lesotho, entirely surrounded by the territory of South Africa, is one of only three countries to be true enclaves. In practice it is closely economically linked to its neighbour, as many people work in South Africa, and it is not impossible that annexation will occur in the future. The country is mountainous, with a lowest point of 1400 metres. The Sani Pass, which connects South Africa and Lesotho, is a dangerous but spectacular dirt road. The winters are cold, and snow is often seen in the highlands. Here is even a small ski resort, Afri-ski. The main natural resources are water and diamonds; both are exported to South Africa. The Katse dam is one of the largest in Africa. The traditional housing is the round thatched hut called a rondavel. Traditional dress, worn in all seasons by both men and women, is the woollen Basotho blanket. The capital, Maseru, has a Royal Palace, a Roman Catholic Cathedral, and two casinos. The modern musical style of Famo developed among migrant workers from Lesotho, and is played on oil drum and accordion. More traditional instruments are the lekolulo, a flute, and the thomo, which is stringed.