Situated at the 128km mark on the Central Cross-Island Highway, Bilu Sacred Tree
is a Lunta Fir (Cunnhamia lanceolata var. konishii,). This tree is 3,200 years old
and about 50m high with a diameter of 3.5m. Situated between Ci’en and Bilu, Bilu
Sacred Tree is the largest old tree along the Central Cross-Island Highway.
Among Taiwan's native trees, the Lunta fir is the tallest. They can exceed more
than 70 meters and can be used for reforestation.
Because the topography near Bilu Sacred Tree is very complex, the temperature
increases with altitude and it is often crowned with clouds and mist, various tree
species are intermingled here. The highest layer of the forest is conifers such
as Chinese spruce (Picea morrisonicola Hayata.), Taiwan hemlock [Tsuga chinensis
(Franch.) Pritz. ex Diels var. formosana (Hayata) Li,] and Lunta fir. Below them
are evergreen broadleaf species with some deciduous species mixed in.