Uto-Aztecan languages account for 23.32% which include Tarahumara, Mayo, Yaqui, Cora and Huichol. McCartney traveled to Mexico, where she lived among natives of the Huichol and Tarahumara tribes. The Tarahumara wear thin-soled sandals known as huaraches. The Sierra Tarahumara Occidental region contains numerous species of pine and oak trees. Leadville was the venue for the American debut of the Tarahumara runners of Mexico. The Tarahumara Indians were in revolt in the mountains of Chihuahua for several years. Extracts of hardwood chips are used as remedies by the Tarahumara Indians. This name comes from the Tarahumara natives. In 2006 True had the idea of inviting American ultrarunners to compete with the Tarahumara. The highest elevations occur in the Tarahumara range. It is also more common for this group to adopt Tarahumara and Mestizo children. All five Tarahumara dropped out before the halfway point. There were small uprisings by the Tarahumara, but to little avail. A revolt arose in 1648, primarily among the Tarahumara. The Tepehuano and Tarahumara languages are of the Pima branch.