アイオワ州の99郡:ミッチェル | FIND Iowa - YouTube
https://www.youtube.com/watch?v=rGmzqsuNti4
"... The fact that it's still standing isn't too much of a surprise when you admire the 18 inch thick stone walls. ..."
天然の石を分厚く積んで作った建物が崩れないの当たり前って、地震来ない地域の人の感覚ってそうなんだ感><;
Fort Severson
1068 456th St, Carpenter, IA 50426
https://maps.app.goo.gl/XXJpLY7r4iV4sHur5