We used to have a rescue like that in Ohio. It was supposed to be a retirement home, but they continued to make the horses take riders. Many were old and blind. They were left in pastures without food or care for years. Many of them didn't have the teeth to graze. The rescue my ranch runs was able to save two of the horses there, both blind, beaten, and starved.
Thankfully, this place, called Hooves, has been shut down. It's horrible what people are allowed to do under the guise of a rescue.
"Sit tall in the saddle, hold your head up high. Keep your eyes fixed where the trail meets the sky. And live like you ain't afraid to die...don't be scared, jut enjoy the ride." - Chris LeDoux