This recreation area covers area with altitudes between 110m and 650m, and is abundant in ecological resources. The forest in the recreation area is mostly primeval forest that consists of mahogany and camphor trees, where formosan rock monkeys can be seen. Autumn maple trees and macaranga can be seen throughout the botanic garden, while some medical herbs such as sicklepods and jack beans are also found. However, you need to walk up the steep Houhanpo to appreciate the most magnificent view of the renowned white barkfig. The species of butterflies and birds by Jhihben River are also very amazingly abundant. Together with the grand waterfall, the rich ecosystem creates a wonderful presentation of the nature.