You can take time to visit Nagato-Yumoto Onsen during your travels to Ichinomata Onsen.
You can learn about the history of Nagato with a visit to Motonosumi Shrine. Take in the museums while you're in the area.
You can enjoy some culture when you stop by Kaneko Misuzu Memorial Museum in Senzaki. Discover the area's volcano viewpoints and temples.