This work investigates the historical progression of European exploration and mapping of the Niger River in West Africa. E. W. Bovill, a recognized authority on African history and the trans-Saharan trade, utilizes primary source accounts from early explorers to reconstruct the challenges of navigating the river's geography. The text argues that the river served as a critical focal point for colonial interests and scientific curiosity throughout the eighteenth and nineteenth centuries.

Historians and geographers frequently cite this text as a reliable reference for the chronology of West African exploration. Readers often note the academic density of the prose, which prioritizes factual documentation over narrative embellishment.