Hiuchigatake

Mount Hiuchi
Hiuchigatake
Highest point
Elevation	2,3561 m (7,730 ft)
Coordinates	36°57′7″N 139°17′19″E / 36.95194°N 139.28861°E / 36.95194; 139.28861
Naming
Native name	燧ヶ岳 (Japanese)
Geography
Mount Hiuchi Location within Japan Show map of Japan Mount Hiuchi Location within Fukushima Prefecture Show map of Fukushima Prefecture
Geology
Rock age	Quaternary
Mountain type	Stratovolcano2
Volcanic arc	Northeastern Japan Arc
Last eruption	July 15441

Mount Hiuchi, also Hiuchigatake (Japanese: 燧ヶ岳) is a 2,356 m-tall (7,730 ft) stratovolcano in Oze National Park, and located in Hinoemata Village, Minami-Aizu gun, Fukushima Prefecture, Japan. This is the highest mountain in Tōhoku region.³ The volcano rises in the north of Lake Ozenuma. It is one of the 100 Famous Japanese Mountains.²⁴

Hiuchi initially formed around 350,000 years ago. Around 160,000–170,000 years ago, Hiuchi erupted, creating a large pyroclastic flow deposit. At the summit of the volcano lie two lava domes, Akanagure (赤ナグレ) and Mi-ike (御池岳). Akanagure, the southern dome, produced a series of viscous lava flows that flowed down the southern and western parts of the volcano about 3500 years ago. Mi-ike is responsible for the only recorded activity.¹

The only recorded activity was on July 28, 1544. A moderate phreatic eruption at the Mi-ike Lava Dome produced lahars and an associated tephra layer.¹⁵