ようがんほらあな

    noun (common) (futsuumeishi)
  1. lava cave
Forms
  • ようがんほらあな
  • ようがんほらあな
Generated definitions (experimental)
  1. lava cave
  2. This term is used to refer to a natural underground chamber or tunnel formed by the flow of lava from a volcanic eruption.
Generated collocations (experimental)