Zimbabwe is distinctive in Africa for its large number of medieval era city ruins built in a unique dry stone style. Possibly the most famous of these are the Great Zimbabwe ruins in Masvingo which survive from the Kingdom of Zimbabwe era. Other ruins include Khami Ruins, Zimbabwe, Dhlo-Dhlo and Naletale. The Matobo Hills are an area of granite kopjes and wooded valleys commencing some 35 kilometres south of Bulawayo, southern Zimbabwe. The Hills were formed over 2000 million years ago with granite being forced to the surface, this has eroded to produce smooth "whaleback dwalas" and broken kopjes, strewn with boulders and interspersed with thickets of vegetation. Mzilikazi, founder of the Ndebele nation, gave the area its name, meaning 'Bald Heads'. They have become famous and a tourist attraction because Cecil John Rhodes famous for his vision that led to foundation of Rhodesia, and other early white pioneers like Leander Starr Jameson, Major Allan Wilson, and most of the members of the Shangani Patrol are buried in these hills at another site named World's View. Hwange National Park and Mana Pools, a UNESCO World Heritage site, are some of the best National Parks and safari destinations in the region. The tourism sector in Zimbabwe has been on the rise for past 2 years.