Robben Island () is an island in Table Bay, 6.9 kilometres (4.3 mi) west of the coast of Bloubergstrand, north of Cape Town, South Africa. It takes its name from the Dutch word for seals (robben), hence the Dutch/Afrikaans name Robbeneiland, which translates to Seal(s) Island. Robben Island is roughly oval in shape, long north–south, and wide, with an area of . It is flat and only a few metres above sea level, as a result of an ancient erosion event. It was fortified and used as a prison from the late-seventeenth century until 1996, after the end of apartheid. Political activist and lawyer Nelson Mandela was imprisoned on the island for 18 of the 27 years of his imprisonment before the fall of apartheid and introduction of full, multi-racial democracy. He was later awarded the Nobel Peace Prize and was elected in 1994 as President of South Africa, becoming the country's first black president and serving one term from 1994–1999. In addition, the majority of prisoners were detained here for political reasons. Two other former inmates of Robben Island, in addition to Mandela, have been elected to the presidency since the late-1990s: Kgalema Motlanthe (2008–2009) and Jacob Zuma (2009–2018). Robben Island is a South African National Heritage Site as well as a UNESCO World Heritage Site. History Located at the entrance to Table Bay, 11 km from Cape Town, this island, was discovered by Bartolomeu Dias in 1488 and, for many years, it was used by Portuguese navigators, later by English and Dutch as a refueling station. Its current name means “seal island”, in Dutch. In 1654, the settlers of the Dutch Cape Colony placed all of their ewes and a few rams on Robben Island, and the men built a large shed and a shelter. The isolation offered better protection against wild animals than on the mainland. The settlers also collected seal skins and boiled oil to supply the needs of the settlement. Since the end of the 17th century, Robben Island has been used for the incarceration of chiefly political prisoners. The Dutch settlers were the first to use Robben Island as a prison. The island's first prisoner was probably Autshumato in the mid-17th century. Among its early permanent inhabitants were political leaders imprisoned from other Dutch colonies, including the Dutch East Indies, and the leader of the mutiny on the slave ship Meermin. After the British