Historical clue formulations

• Flat earth? — 2026-02-21
• Table outside — 2026-01-02
• American city in the Sonoran Desert — 2025-07-15
• Arizona's third-largest city — 2025-06-01
• Canyonlands National Park feature — 2025-01-30
• It's bigger than a butte — 2024-12-08
• U.S. city named for a geological formation — 2024-11-21
• Site for a cliff dwelling — 2024-06-11
• Flat formation — 2024-04-28
• City east of Tempe — 2023-12-08
• Small plateau — 2023-11-05
• Costa ___, Calif. — 2023-10-05
• Butte, but bigger — 2023-09-27
• ___ Verde, national park in Colorado — 2023-09-21
• Arizona city — 2023-08-17
• Feature of the Painted Desert — 2023-06-28
• Plain protuberance — 2022-12-10
• City east of Phoenix — 2022-10-23
• Flat top? — 2022-08-14
• Largest city in the U.S. that's not a county seat — 2022-04-29
• High, flat land feature — 2022-01-18
• Bit of Southwest topography — 2022-01-11
• Flat-topped hill — 2021-01-11
• Hill with no peak — 2020-12-10
• Big butte — 2020-12-06
• ___ Verde National Park — 2020-07-12
• It's a butte and then some — 2020-06-12
• Large, flat-topped hill — 2020-05-25
• Tempe neighbor — 2020-04-05
• Flat-topped hill — 2019-10-28
• Small plateau — 2019-09-09
• Four-letter U.S. city with the highest population — 2019-06-23
• Canyonlands National Park feature — 2019-02-08
• Canyonlands National Park sight — 2018-04-26
• ___ Verde National Park — 2017-12-13
• Big butte — 2017-08-28
• Big butte — 2017-07-20
• ___ Verde National Park — 2017-01-24
• Grand Canyon sight — 2016-11-08
• Western plateau — 2016-10-31
• Formation with steep cliffs — 2016-08-23
• Spanish for "table" — 2016-08-17
• City between Tempe and Apache Junction — 2016-07-05
• Geological flat top — 2016-06-26
• Badlands sight — 2016-06-08
• Tenis de ___ (Ping-Pong, in Spain) — 2015-11-25
• Southwest hikers' destination — 2015-06-11
• Arizona's third-largest city — 2015-01-27
• ___ Verde National Park — 2015-01-22
• U.S. city that becomes another U.S. city if you move the last letter to the front — 2014-12-07