At the nearby Gona site, where there is an abundance of raw materials, several Oldowan tools (an industry previously believed to have been invented by "H. habilis") were recovered from 1992 to 1994. The tools date to around 2.6–2.5 mya, the oldest evidence of manufacturing at the time, and since "A. garhi" was the only species identified in the vicinity at the time, this species was the best candidate for authorship. However, in 2015, the earliest remains of "Homo", LD 350-1, were discovered in Ledi-Geraru, also in the Afar Region, dating to 2.8–2.75 mya. More stone tools were found in 2019 dating to about 2.6 mya in Ledi-Geraru, predating the Gona artifacts, and these may be attributed to "Homo"; the invention of sharp-edged Oldowan tools could actually be due to specific adaptations characteristic of "Homo". Nonetheless, other australopithecines have been associated with stone tool manufacturing, such as the 2010 discovery of cut marks dating to 3.4 mya attributed to "A. afarensis", and the 2015 discovery of the Lomekwi culture from Lake Turkana dating to 3.3 mya possibly attributed to "Kenyanthropus".