Historical clue formulations

• Suffix with hazard — 2016-11-01
• - — 2016-05-05
• Suffix with peril — 2013-07-18
• Suffix with cavern ... or gorge? — 2013-01-22
• Cavern end — 2005-11-26
• Suffix with vigor — 2003-06-12
• Suffix with humor — 2002-10-26
• Suffix with libel — 1997-02-13
• Suffix with rigor or vigor — 1994-10-02