Isimila Stone Age Site is pre-historic settlement located inside Iringa District of Iringa Region in Tanzania. The site is home to the Middle Pleistocene archaeological site. Large surface assemblages of later Acheulean lithics, including hand axes, cleavers, scrapers, cores and bones, have been found at the site. Isimila provides a special view into Middle Pleistocene Hominid behavior. The site is a registered Tanzania National Historic Site. 

Isimila stone age site and natural pillars is likely known as the home of the early man between 60,000 and 100,000 years ago because of the tools that were mostly used by the early man in their different activities are found here.

There is evidence which shows that the area around the Isimila site was a small lake. This would have been a perfect hunting ground for hominids who lived there between 300,000 - 600,000 years ago. The tools found there confirm this theory. Looking at the site today you might be able to imagine how the land was eroded from a lake to a large canyon. Harder rock types more resistant to erosion have remained, leaving thin rock towers as high as 30m, thus Isimila Stone Age site and natural pillars in Iringa

The tour of the Isimila Stone Age site includes; canyon visit, an explanation of how the rock towers were formed and a scenic walk with a great spot to see different bird species.

Fossils discovered in Isimila verified site; numerous fossils dating back more than 100 years have been discovered here. Tomahawks, scrubbers, and stones are displayed throughout the small historical center that is visible here. There are also many fossilized bones to be seen here, including human fossils, animal fossils, and various gadget fossils. The fossils of well-evolved organisms include the bones associated with giraffes, even though they have a more limited neck. The remains of hippos, elephants, and a variety of extinct pigs are found.