Historical clue formulations

• Progressive rock? — 2023-11-22
• Hot flow — 2023-04-07
• Stream on the side of a mountain, perhaps — 2014-05-16
• Soft rock? — 2006-08-27
• Fuji flow — 2004-06-22
• Hot roll? — 2001-10-12
• It once settled near Pompeii — 1997-03-11
• Kilauea flow — 1994-11-04
• Hot stuff — 1994-02-24