Oniishi Bozu Jigoku

"A one-minute walk from the Umi Jigoku-mae bus stop and a 10-minute drive from Kamegawa Station and Beppu Station. This day-use hot spring bathing facility is located inside the Oniishi Bozu Jigoku, a popular and historic sightseeing destination which is even mentioned in the ""Bungo no kuni fudoki,"" a regional historical chronicle compiled in 733. The waters of the bathhouse' salt spring are said to be highly moisturizing and promote warmth retention in addition to treating such ailments as nerve pain, muscle soreness, and chronic digestive diseases. The recommended course is for visitors to bath here after bathing in the waters of Myoban Onsen to enjoy their full health benefits. Be aware that bathing here is contraindicated for those with certain conditions such as those who are pregnant or who have an acute illness. The bathhouse has indoor bathing areas, outdoor baths, scenic overlook baths, and five private reservable family baths. The bathhouse also sells ""hell's"" pudding and eggs cooked using the natural volcanic steam in the area."