Historical clue formulations

• Floral archway — 2021-05-02
• Vine-covered passageway — 2012-05-15
• Shaded passageway — 2010-12-01
• Vine-covered colonnade — 2010-10-24
• Shaded passageway — 2008-04-28
• Vine-covered passageway — 1998-05-07