Tuchanka is a planet in the Mass Effect universe, known for its harsh environment and rugged terrain. It is the homeworld of the Krogan species, characterized by its arid landscapes, large canyons, and toxic atmosphere. The planet has a history of nuclear war, which has significantly impacted its ecology and the development of its inhabitants. The Krogan culture is deeply tied to Tuchanka, where they have faced numerous challenges, including the genophage, a biological weapon that drastically reduced their birth rates. Despite these hardships, Tuchanka remains a symbol of resilience for the Krogan, showcasing their strength and determination to survive.