Games		Three Explorers Solution The third statement, "Johannes Rebmann was not discovered along the banks of Lake Tanganyika", is the only one that can be true and satisfy the conditions of the puzzle. Therefore, David Livingstone was discovered along the banks of Lake Tanjanyika (by Henry Stanley in 1871). Johannes Rebmann was the first European to see Mount Kilimanjaro (in 1848). John Hanning Speke was the first European to see Lake Victoria (in 1858 during his search for the source of the Nile River). Return to Three Explorers. © JamboKenya.