European exploration of Africa 1840s, so that around the midpoint of the 19th century and the beginning of the colonial Scramble for Africa, the unexplored parts were now limited to what would turn out to be the Congo Basin and the African Great Lakes. This "Heart of Africa" remained one of the last remaining "blank spots" on world maps of the later 19th century (alongside the Arctic, Antarctic and the interior of the Amazon basin). It was left for 19th-century European explorers, including those searching for the famed sources of the Nile, notably John Hanning Speke, Sir Richard Burton, David Livingstone and Henry Morton
David Ingram (explorer) they used). Nevertheless, it is peppered with intriguing tidbits, including what may be the first recorded description of an American bison. Some scholars have questioned the entire story on the grounds that it would have been physically impossible to walk over 3,000 miles through the wilderness in only 11 months, but in 1999 British writer Richard Nathan retraced Ingram's journey in reverse, walking from Nova Scotia to Tampico in just 9 months. David Ingram (explorer) David Ingram (dates uncertain) was a 16th-century English sailor and explorer who claimed to have walked across the interior of the North American continent from