Tourism in Tanzania in 2013. In 2016, 1,284,279 tourists arrived at Tanzania's borders compared to 590,000 in 2005. Tanzania has almost 38% of its land reserved as protected areas, one of the world's highest percentage. Tanzania boasts 16 national parks and is home to a large variety of animal life. Among the large mammals include the Big five, cheetahs, wildebeest, giraffes, hippopotamuses and various antelopes. Tanzania's most well known wildlife attractions are located in the northern part of the country and include the Serengeti National Park, Tarangire National Park and Lake Manyara National Park. The Serengeti National park encompasses the world-famous great migrations
Geology of Tanzania fill with sediments, depositing the first rock units of the Karoo Supergroup—the most extensive stratigraphic unit in southern Africa. In the Tanzania region, situated in the interior of Pangaea, the Karoo Supergroup deposited between the Late Carboniferous and the Early Jurassic, with sequences of terrestrial sediments. These sediments formed diverse rock units including sandstones, conglomerates, tillite, shale, red and gray mudstones and periodically, limestone deposits. Many of the Tanzanian Karoo rocks from this period contain plant and animal fossils. With the fragmentation of Pangaea, the modern coastal region of Tanzania experienced a long lasting marine transgression, which deposited limestone, marl,