Hoodoo Mountain lies in an area of high elevation ecosystems colonizing very erodible substrate. The mountain is generally poorly forested due to its high altitude and remote alpine location. This mountainous terrain has made Hoodoo Mountain a site for alpine tundra. Even though alpine tundra lacks trees, Hoodoo's lower flanks contain mountain hemlock. Because alpine tundra is located in various widely separated regions on Earth, there is no animal species common to all areas of alpine tundra.