Donzurubo

Sekiya is the best station to walk from (there are guide signs along the way). But there is a section of road (about 250m) that is not hiker friendly; be careful there, I had to jump in the ditch a few times because big gravel trucks use that narrow section of road.

Place itself is interesting, but it is already quite damaged by visitors.

An interesting spot to stop by just next to the road.

There are toilets and a parking space for several cars along the road, then cross the road and walk about 100 meters to reach the stairs. If you climb up, you can reach the rocky mountain in a few minutes. Just a short walk away It's easy and fun to see the remains of a volcanic eruption. The rocky mountain seems difficult to slip, but It's crumbly and seems to fall apart easily I walked while checking my step. When passing through the trees, the grass and tree branches are sticking out a little so you can hit them. Also for insect control I think long sleeves are better. This volcanic stratum is soft I was able to reconfirm the knowledge that the Yokoana Tumulus was built.

It was a short walk to the white rocky mountain, but at the fork in the road ahead, I continued on toward Miharashigaoka, and when I got lost, I tried to turn back, but there I saw a signpost pointing me to the underground bunker. We arrived at the underground bunker by following the ribbon markings, and from there we returned via the observation deck. The road was quite steep, with some places along the way that you couldn't pass without touching. It was a good exercise.