じごくのかま
the cauldron of hell (in which sinners are boiled)
・ground
・earth
・prison
・jail
・kettle
・cauldron
・iron pot
じごくのかまのふた
creeping bugleweed (Ajuga decumbens)
じごくのかまのふたもあく
even the demons of hell rest during Obon and the New Year