Wattayah, located in the governorate of Muscat, is the oldest known human settlement in the area and dates back to the Stone Age, making it around 5,000 years old. Archaeological remains from different dates have been discovered here, the earliest representing the Stone Age, then the Heliocentric Age and finally, the Bronze Age. Findings have consisted of stone implements, animal bones, shells and fire hearths. The latter date back to 7615 BC and are the oldest signs of human settlement in the area.
Other discoveries include hand-moulded pottery bearing distinguishing pre-Bronze Age marks, heavy flint implements, pointed tools and scrapers.
On a mountain rock-face in the same district, animal drawings have been discovered. Similar drawings have also been found in the Wadi Sahtan and Wadi Bani Kharus areas of Rustaq. These drawings consist of human figures carrying weapons and being confronted by wild animals. Siwan in Haima is another Stone Age location and some of the archaeological finds have included arrowheads, knives, chisels and circular stones which may have been used to throw at animals