Near Brighton, CO, Barr Lake State Park is an old bison wallow turned irrigation reservoir.
https://cpw.state.co.us/placestogo/parks/barrlake
The farmer co-operative that owns it allowed the state to develop a park there. Water is king and dry years will see the reservoir drained nearly dry. During wet times a series of elevated boardwalks will have inches to feet of water under them.
In past years I lived and worked out of Brighton. For exercise I would walk the eight mile trail around the lake. One day I was on that portion of the elevated boardwalks when I heard the sound of an animal running towards me. Suddenly, around a bend about 25’ from me appeared a mountain lion, or cougar, or puma; whatever is your preference. The walkway is barely wide enough for two people to walk side by side. The lion passed directly by me with inches to spare and didn’t even slow down. It did eyeball me.
Shaken, I stood stock still, other than drawing my Charter Arms Bulldog .44 Special. I could hear the fading sounds of the mountain lion running away. Then I wondered, “What in hell could scare a lion so badly it would flee as fast as it could run?” Turning in the director the mountain lion ran I started walking with many a glance backward. I never saw anything else but when I reached my car I promptly left the park.
