Lalish, in northern Iraq's Nineveh Province, is the spiritual heartland for Yazidis.
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Yazidis believe in one God as the creator of the world, but many have been raped or murdered by ISIS, which claims they are "devil worshipers."
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The ancient Yazidi faith pre-dates Islam and Christianity.
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About half a million people belong to the Yazidi community.
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Thousands of Yazidis are still believed to be held by ISIS, in the parts of Syria and Iraq under its control.
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Baba Sheikh, the spiritual leader of the Yazidis, says he hopes they will return home soon. "'I wish they all will come back -- we are going to welcome them warmly," he said.
