Chronicles of the Spanish explorers provide the earliest written accounts regarding the Tennessee Valley's 16th-century inhabitants. Most of the valley, including Chiaha, was part of the Coosa chiefdom's regional sphere of influence. Inhabitants spoke a dialect of the Muskogean language, and lived in complex agrarian communities centered around fortified villages. Cherokee-speaking people lived in the remote reaches of the Appalachian Mountains, and may have been at war with the Muskogean inhabitants in the valley. The village of Tali, visited by De Soto in 1540, is believed to be the Mississippian-period village excavated at the Toqua site in the 1970s. The villages of Chalahume and Satapo, visited by Pardo in 1567, were likely predecessors (and namesakes for) the later Cherokee villages of Chilhowee and Citico, which were located near the modern Chilhowee Dam.