In the late 1950s, amid a dramatic landscape of eroded sandstone pillars, archaeologists unearthed one of the most significant Stone Age finds ever identified. Tools found at the site hammerstones, axe heads, flints and scrapers are estimated to be between 60,000 and 100,000 years old. There’s a museum with small, well captioned displays highlighting some of the discoveries. Isimila is signposted off the Mbeya road to the left, about 21km southwest of Iringa.