Book excerpt: In Russia's Far East sits the wild Ussuri Kray, a region known for its remote highlands and rugged mountain passes where tigers and bears roam the cliffs, and salmon and lenok navigate the rivers. In this collection of travel writing by famed Russian explorer and naturalist Vladimir K. Arsenyev (1872-1930), readers are shuttled back to the turn of the 20th century when the Russian Empire was reeling from its defeat in the Russo-Japanese War (1904-1905) and vulnerable to its Far Eastern neighbors. What began as an expedition to survey the region's infrastructure for the Russian military turned into an adventure through a territory rich in ethnic and ecological diversity. Encountering the disappearing indigenous cultures of the Nanai and Udege, engaging the help of Korean farmers and Chinese hunters, and witnessing the beginning of indomitable Russian settlement, Arsenyev documents the lives and customs of the region's inhabitants and their surroundings. Originally written as "a popular scientific description of the Kray," this unabridged edition includes photographs largely unseen for nearly a century and is annotated by Jonathan C. Slaght, a biologist working in the same forests Arsenyev explored. Across the Ussuri Kray is a classic of northeast Asian cultural and natural history.