Trekking Over the Mountain to Arima Onsen
Start at Ashiyagawa station and head immediately up towards the mountain.
It may be best to look for the other hikers if its your first time.
At first follow signs for the rock garden. After passing through there follow signs for the summit of Mt. Rokko.
After reaching the summit its a fairly easy walk down into Arima Onsen.
This is a personal favorite trail of mine that takes you up and over the summit of Mt. Rokko and down into Arima Onsen.
The trail averages about 3 1/2 - 5 hours depending on your pace.
Great for those who are interested in a bit of a hiking challenge with a relaxing hot spring reward to cap the experience.