Model courseN-3Discover the traces of eruption of Mt.Fuji
- North Izu Area - Nagaizumi town
- Geological age
- About 10,000 years ago, the flow of the Mishima lava ejected from Shin-Fuji Volcano has created land.
- Start: Nagaizumi Visitor CenterAyutsubo waterfallsQuarry traceWarikozuka Inari shrineShimotogari Station：goal
- Walk about 2.3km (cumulative altitude 30m)
- Time required
- About 2 hours
- Meeting place
- Nagaizumi Visitor Center, Community Nagaizumi 2F
When the Shin-Fuji Volcano begn erupting about 10 thousand years ago, the lava flow called "Mishima lava" flowed down the valley between Mt. Ashitaka and Mt. Hakone. Mishima lava flow stopped right there and created Ayutsubo waterfalls, which are now cascading over a cliff of basalt. That is why you cannot see the trace of the lava flow in the downstream of waterfalls. The upper stream of the waterfalls opens wide on the left and the right side, so you can enjoy a magnificent view of Mt. Fuji above the waterfalls. At the end of Mishima lava flow, you will also see Warikozuka Inari Shrine and Chourei Shrine. Both are built on the lava bulge(lava mound). This course, covering the urban area, is a unique course that gives you some ideas about what the end of the lava flow is like.
Start: Nagaizumi Visitor Center
Information on Nagaizumi geosite is available here.
At Ayutsubo Waterfalls in the Kisegawa River, you can see the rocks about 10 m thick with several layers of lava piled up. This is the lava flow that flowed from Mt. Fuji approximately 10,000 years ago. The soft loam layers beneath the lava flow were eroded by the flow of the Kisegawa River, and the hard lava portion that remained created the waterfalls.
Stone Quarry Traces
Behind Belle Foret (concert hall) you will see the traces of a quarry where the Mt. Fuji lava flow was quarried out.
Warikozuka Inari Shrine
On a small hill where the Warikozuka Inari Shrine is built, there are many red torii(shrine gateways) along the cracks of the rock. This rock is the lava flow from Mt. Fuji about 10,000 years ago. The shrine stands on this "lava mound".
- Entry fee
- Adult: 1,500yen Elementary and middle school student: 750 yen
- Number of participants
- 2 to 10 people
- Please reserve one week in advance.
- What to wear and bring
- Walking clothes and footwear, hat, rain gear, drinks, etc.
- Canceled in case of heavy rain or storm
Cancellation on the day will be fully charged.
- Izu Peninsula Geo Guide Association