Historical clue formulations

• Structures commonly seen at ski resorts — 2025-04-16
• Chalet alternatives — 2023-05-05
• Many ski lodges — 2020-04-04
• Many ski lodges — 2016-03-06
• Many ski lodges — 2014-07-20
• Many ski chalets — 2008-09-07
• Ski resort sights — 2007-02-17
• They're thin at the top — 1999-10-29