The book "Naufragios" by Alvar Núñez Cabeza de Vaca is a first-hand account of the author's experiences as a member of the ill-fated Narváez expedition to Florida in 1528. After the expedition's ships were wrecked in a hurricane, Cabeza de Vaca and his companions were forced to survive for eight years among the Native American tribes of the Gulf Coast region. During this time, Cabeza de Vaca learned about the customs and beliefs of these tribes and witnessed their struggles against European colonization.