Archaeological evidence from Soba suggests a decline of the town, and therefore possibly the Alodian kingdom, from the 12th century. By 1300 the decline of Alodia was well advanced. No pottery or glassware postdating the 13th century has been identified at Soba. Two churches were apparently destroyed during the 13th century, although they were rebuilt shortly afterwards. It has been suggested that Alodia was under attack by an African, possibly Nilotic, people called Damadim who originated from the border region of modern Sudan and South Sudan, along the Bahr el Ghazal River. According to geographer Ibn Sa'id al-Maghribi, they attacked Nubia in 1220. Soba may have been conquered at this time, suffering occupation and destruction. In the late 13th century, another invasion by an unspecified people from the south occurred. In the same period poet al-Harrani wrote that Alodia's capital was now called Waylula, described as "very large" and "built on the west bank of the Nile". In the early 14th century geographer Shamsaddin al-Dimashqi wrote that the capital was a place named Kusha, located far from the Nile, where water had to be obtained from wells. The contemporary Italian-Mallorcan Dulcert map features both Alodia ("Coale") and Soba ("Sobaa").