A niddah, in traditional Judaism, is a woman who has experienced a uterine discharge of blood, or a woman who has menstruated and not yet completed the associated requirement of immersion in a mikveh.
A niddah hut (Mergem Gogo) at the Jewish village of Ambober in northern Ethiopia, 1976.
Mikveh or mikvah is a bath used for the purpose of ritual immersion in Judaism to achieve ritual purity.
Mikvah Mei Chaya Mushka in Crown Heights, Brooklyn
Excavated mikveh in Qumran
Medieval Mikveh room in the old Synagogue of Sopron, Hungary, which dates to the 14th century
A medieval mikveh in BesalĂș, Spain