Historical clue formulations

• Stalactite site — 2025-05-26
• Setting for a Pirates of the Caribbean ride — 2019-06-05
• Location containing 10-Downs and 25-Downs — 2015-06-04
• Setting for some prehistoric drawings — 2015-04-24
• Carlsbad feature — 2012-04-30
• Where to find stalactites and stalagmites — 2011-10-03
• Site of some paintings — 2010-07-18
• Grotto — 2007-07-31
• Echo chamber? — 2003-01-24
• Stalactite site — 2000-12-17
• Grotto — 1997-01-13