海狸成就者

不要被今天照片的上半部分分心。爱达荷州锯齿形山脉的明信片吸引力是不可否认的，但我们今天的重点是底部简陋的结构。
原文：
Don't get distracted by the awesome top half of today's photo. The postcard appeal of Idaho's Sawtooth Range is undeniable, but our focus today is on the humble structure at the bottom.
《© Charles Knowles/Alamy》