- Kasuga-yama Hill Primeval Forest - [Special Natural Monument] As this is a divine hill of the Kasuga Grand Shrine, the trees in the whole area of the hill behind the shrine have been prohibited from cutting down for more than 1,000 years. The hill is covered with a primeval forest of cedars, firs and cypresses. Rare animals such as a polypedatid and a kind of corbicula (Natural Monument) inhabit the hill, where it is dark even in the daytime because the area is located deep in the forest.