01 ／ Fault
The Tanna Fault, which moved in the 1930 North Izu earthquake, is a national Natural Monument. At Tanna Fault Park (丹那断層公園) the fault cuts across stone walls and a waterway, and the horizontal offset of about 2.6 m can be seen as it was left. It is an active fault that moves roughly every 700 to 1,000 years.
02 ／ Milk
In the Tanna Basin (丹那盆地), ringed by the Hakone hills, dairy farming began in the early Meiji era, and by then farmers were already peddling butter. Tanna milk (丹那牛乳) is a school-lunch staple across eastern Shizuoka. There is not a single traffic light in the basin.
03 ／ Pass
Jukkoku Pass (十国峠) takes its name from the ten old provinces, among them Izu, Suruga, Kai, Sagami and Awa, that could be seen from here. It stands 770 m high, a cable car climbs to the top, and on clear days you may see as far as the Bōsō Peninsula. It became a Registered Monument in 2016.
Living here
From Mishima Station the Izuhakone Railway Sunzu Line takes 13 minutes to Izu-Nitta Station. The town's Kannami Station on the JR Tōkaidō Line sits between Atami and Mishima, both Shinkansen stops. The town runs a hot-spring facility, Yu-topia Kannami (湯～トピアかんなみ).
−2.3% since 2015
37,375 → 36,794
29.42km² of it habitable
2024
2.5 people per household
2020
National average 60,630 yen
2023
7.3 per 10,000 people
2023
These 3 items are waiting on a nationwide data source. We do not fill them with estimates.
ACCESS
Travel times follow 静岡県の移住・定住サイト「ゆとりすと静岡」の函南町のページ（問い合わせ先は函南町企画財政課）に載っている値 (checked 2026-09-24). They vary by time of day.
Shape
North to south
13.5km
See the town as it is now.
Source: Wikidata (P2002, P2003, P2013, P2397)
If something caught your eye, ask the town itself.
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