Historical clue formulations

• What might lead to a pile of dirty laundry — 2026-06-20
• Water slide — 2020-10-14
• Way down — 2019-10-20
• Ladder's counterpart — 2016-07-30
• Water park feature — 2011-03-16
• Water park slide — 2008-08-25
• Way down — 2007-06-28
• Water park slide — 2007-03-06
• Water park feature — 2005-08-05
• Water slide, e.g. — 2005-05-19
• Place to throw garbage — 2004-11-24
• Water park slide — 2004-07-20
• Water park feature — 2002-11-15
• Rafter's thrill — 2001-07-08
• Back pack? — 2000-02-26
• Smokejumper's need — 1999-07-25
• Bobsledding track — 1994-07-17