 Oak savanna is a type of grassland with scattered oak trees , found on the lowest slopes of the Table Rocks . The Takelma tribe often set fires in the oak savanna and chaparral regions to prevent brush overgrowth , creating foraging areas for animals such as deer and elk . It also prevented large wildfires . Oregon white oak and ponderosa pine are the most common trees found in the region . Buckbrush , sticky whiteleaf manzanita , Pacific madrone , deerbrush , birchleaf mountain mahogany , and Pacific poison oak are also common . 
