Historical clue formulations

• Earth goddess in "Das Rheingold" — 2025-10-31
• Mother of the Valkyries — 2012-05-04
• Wagner's earth goddess — 2010-03-24
• "Das Rheingold" goddess — 2009-10-28
• Wagnerian earth goddess — 2004-07-27
• Mother of the Valkyries — 2001-05-06
• "Das Rheingold" goddess — 2001-02-17
• "Das Rheingold" goddess — 1999-05-14
• Mother of the Valkyries — 1998-12-05
• "Das Rheingold" earth goddess — 1996-12-22
• "Das Rheingold" role — 1996-06-25
• Earth goddess — 1996-01-09
• Wagner's earth goddess — 1994-02-17