Some of these things are 10 stories deep or more, and one of my climbing friends says that the reason we actually climb at night is because if we ever saw the bottom of what we're climbing over, we would never do it.
十階建ての建物くらいの深さのものもあり こんなことを言う登山家もいます 夜中に登山をするのは 登山中に足下のクレバスの 底がはっきりと見えたら 絶対に登れないからだ