03483 ／ いわいずみちょう
Iwate Prefecture 下閉伊郡No dinosaurs, they thought. An arm bone.
Moshiryu, the Moshi fossil01 ／ Cave
The National Natural Monument "Iwaizumi Wakutsu and Bats" was designated on December 14, 1938. The Agency for Cultural Affairs database describes a cave opening at the eastern foot of a limestone mountain, with bats gathering to hibernate in a side passage near the entrance. The Ryusendo Cave website says 8 underground lakes have been found.
02 ／ Coast
Kumanohana at Moshi is, in the Ministry of the Environment's words, a peninsula seen from a lookout. It was named because its shape resembles a bear's nose, and waves eroded two sea caves to form it. The tourist association says the Early Cretaceous Harachiyama Formation was carved into this shape.
03 ／ Shimizu River
The tourist association says groundwater from the underground lake of Ryusendo Cave wells up near the cave mouth and reaches the center of Iwaizumi Town as the Shimizu River. It says a promenade has been built along the river.
Now and 1974–78. Tap a photo to zoom in.
Wide (about 6 km across)
Close (about 1.5 km across)
2013 (shot FY2013)Shot 1974–78
Source: Geospatial Information Authority of Japan (GSI) GSI Tiles（年度別空中写真（2013年度）／国土画像情報（第一期：1974〜1978年撮影））
Living here
There is no railway station in the center of town. The JR Bus Tohoku Hayasaka Kogen Line runs from the east exit of Morioka Station to Iwaizumi Byoin-mae in one ride. In the timetable revised April 1, 2024, all four buses from Morioka take 124 minutes. The town office gives the area as 992.33 km², 51 km east to west and 41 km north to south.
−11.3% since 2015
13,879 → 8,726
76.99km² of it habitable
2024
2.2 people per household
2020
9.2 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 JRバス東北公式『盛岡ー岩泉・龍泉洞（早坂高原線）』の時刻表（http://www.jrbustohoku.co.jp/route/detail.php?r=105&rc=15 。ページの表記は『2024年4月1日改正』）の『盛岡発時刻表』。盛岡駅東口1番バス停発→岩泉病院前着は 9:10→11:14・12:10→14:14・14:50→16:54・17:50→19:54 の4本すべて124分（龍泉洞前まで 9:10→11:24 の134分ほか）。運転日の印（○＝土日祝は運休・△＝土日祝のみ）は『岩泉発時刻表』にだけ付き、盛岡発の4本には印が無い＝毎日運転。逆向きの岩泉病院前発→盛岡駅東口着は 6:05→8:20・7:05→9:12・8:05→10:14・14:05→16:14・16:05→18:13（127〜135分。うち2本は○△の印つき）。町公式『岩泉町役場所在地、交通機関、首長』（更新2019-04-19）が『JRバス東北（盛岡駅東口－龍泉洞前） 済生会病院前バス停から５分』と書く (checked 2026-10-23). They vary by time of day.
Shape
North to south
41.3km
If something caught your eye, ask the town itself.
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