This work investigates the intersection of East African wildlife, human history, and the evolving relationship between the continent's indigenous cultures and its natural landscapes. Peter Matthiessen, an established naturalist and writer, utilizes his extensive travels through Sudan, Uganda, Kenya, and Tanzania to document the ecological and cultural state of the region. By synthesizing personal observation with historical context and encounters with prominent conservationists, he constructs a narrative that examines the fragility of the African wilderness and the ancient roots of human existence.

The text is regarded as a significant contribution to nature writing, noted for its blend of poetic observation and rigorous documentation of East African ecosystems. Its enduring relevance is supported by its historical depth, though readers should note the perspective is rooted in the author's experiences during the early 1970s.