you haven’t seen the Cave at Dunlap Hollow. This 1,500-square-foot rock formation turned modern vacation home 50 miles southeast of Columbus, Ohio, books out one year in advance. Bold design ...

hundreds of visitors from across the West Midlands and further afield came across these modern "cave people" before the number of inhabitants dwindled and their rock homes became abandoned.

"Some developers even built modern hotels there," Lim said ... but it shows that some cave homes manage to fit sleeping, living, and kitchen areas into close quarters. These sunken courtyard ...