I was walking a trail, stepped off a rock onto what looked like grass.
It was a ditch, and I found myself waist deep in swamp.
Yuck! “
BPT, a similar thing happened to me when I was a little girl. We were at the park for a picnic and my dad and I were playing catch when I missed the ball, ran after it, and suddenly found myself sunk halfway in a swampy thing. I was screaming that I was in quicksand, and my daddy saved me. I was never so scared.