The City (Atlan Saga, Vol. 4)

Pocket Books, 1979. Mass market paperback, with Boris Vallejo cover art. Book 4 in the 5-book "Atlan / Cija" cycle. Set in prehistoric South America and in the mythical world of Atlantis. The books in the series are: "The Serpent (1963); "The Dragon" (1963); "Atlan" (1965); "The City" (1966); and "Some Summer Lands" (1977).