Firs have a single, straight main trunk, and moreover, only firs are found in these forests, so that they are also known as "all-fir forests." The lovely sight of the forest deeply impresses visitors.
冷杉樹幹挺直，主幹不分叉，而且森林只由冷杉單一樹種組成，又稱「冷杉純林」，優美的林相，讓旅客留下深刻印象。