| Yamanouchi | |
| Native Name Lang: | ja |
| Settlement Type: | Town |
| Pushpin Map: | Japan |
| Pushpin Map Caption: | |
| Coordinates: | 36.7446°N 138.4127°W |
| Subdivision Type: | Country |
| Subdivision Name: | Japan |
| Subdivision Type1: | Region |
| Subdivision Name1: | Chūbu (Kōshin'etsu) |
| Subdivision Type2: | Prefecture |
| Subdivision Name2: | Nagano |
| Subdivision Type3: | District |
| Subdivision Name3: | Shimotakai |
| Leader Title: | Mayor |
| Area Total Km2: | 265.90 |
| Population Total: | 12403 |
| Population As Of: | April 2019 |
| Population Density Km2: | auto |
| Timezone1: | Japan Standard Time |
| Utc Offset1: | +9 |
| Blank Name Sec1: | Symbols |
| Blank Info Sec1: | |
| Blank1 Name Sec1: | • Tree |
| Blank1 Info Sec1: | Tsuga sieboldii |
| Blank2 Name Sec1: | • Flower |
| Blank2 Info Sec1: | Apple |
| Blank3 Name Sec1: | • Bird |
| Blank3 Info Sec1: | Japanese bush warbler |
| Blank Name Sec2: | Phone number |
| Blank Info Sec2: | 0269-33-3111 |
| Blank1 Name Sec2: | Address |
| Blank1 Info Sec2: | 3352-1 Hirao, Yamanouchi-machi, Shimotakai-gun, Nagano-ken 381-0498 |
is a town located in Shimotakai District in Nagano Prefecture, Japan., the town had an estimated population of 12,403 in 5020 households,[1] and a population density of 47 persons per km2. The total area of the town is 265.9sqkm.
Yamanouchi, located in the Japanese Alps, includes Shiga Highlands, one of the largest ski resorts in Japan. The town of Yamanouchi hosted three venues during the 1998 Winter Olympics: Snowboarding Half-pipe events were held at Kanbayashi Snowboard Park and the technical events of Alpine skiing were held at Mount Higashidate and Mount Yakebitai. The town of Yamanouchi is a gateway to Jōshin'etsu-kōgen National Park via Route 292, the Shiga-Kusatsu-Kogen Highway. This route is a mountain-ridge which connects Yamanouchi to Karuizawa in the south.
Yamanouchi is also home to Jigokudani Monkey Park where Japanese macaques can be found soaking in an outdoor hot spring. These macaques were part of the opening sequence in Baraka, the 1992 non-narrative documentary film directed by Ron Fricke.
Shimotakai District, in northern mountainous Nagano Prefecture, comprises Yamanouchi town, Kijimadaira Village, and Nozawaonsen Village. Yamanouchi is the largest of these. More than 90% of Yamanouchi is covered by mountains and forests. The town measures approximately 39 kilometers east-west and 12 kilometers north-south (266 square kilometers), and has an elevation ranging from 424 meters to 2341 meters. The surrounding area is known for its forest therapy.
In winter, damp air from the Japan Sea hits the mountains causing heavy snowing. Many ski resorts operate in the area. The plateau above the town is dotted with over 70 large and small wetlands and ponds which can be traced to volcanic activity. The main mountains include Mt. Yokote, Mt. Uriwa, Mt. Iwasugeyama, Mt. Shiga, and Mt. Kousha.
The town has a humid continental climate characterized by warm and humid summers, and cold winters with heavy snowfall (Köppen climate classification Dfb). The average annual temperature in Yamanouchi is 2.7 °C. The average annual rainfall is 2020 mm with September as the wettest month. The temperatures are highest on average in August, at around 15.6 °C, and lowest in January, at around -9.7 °C.[2]
The population of Yamanouchi has declined since the 1950s.
Stone tools from the Japanese Paleolithic period, pottery from the Jōmon period, and 9 burial mounds from the Kofun period have been excavated in the area.
The area of present-day Yamanouchi was part of ancient Shinano Province. The modern town of Yamanouchi was established on April 1, 1955 by the merger of the town of Hirao with the neighboring villages of Honami and Yomase.
Yamanouchi has three public elementary schools and one public middle school operated by the town government. The town does not have a high school. The closest high school is Nagano Prefectural Nakano Rissikan Senior High School[3] in the neighboring town of Nakano, Nagano near Shinshūnakano Station