This work investigates the historical sophistication and long-term viability of indigenous agricultural systems across the diverse ecological zones of the Amazon and the Andes. William M. Denevan, a Professor Emeritus of Geography, synthesizes decades of field research and archaeological data to challenge the perception of pre-Columbian landscapes as pristine wilderness. He argues that native populations actively engineered their environments through complex land management techniques to sustain large populations in challenging terrains.

Scholars and geographers frequently cite this text as a foundational synthesis of indigenous South American land management. Readers often note the academic rigor and the clarity with which the author connects historical landforms to contemporary environmental understanding.