A little story about me over the last 2 weeks, I was on my bike going down a hill I've been down before went around the corner at the bottom and at 19mph hit a 15mm steel wire recently placed across the track.

I was in bright sunshine and the wire in dappled shade just wasn't visible, also the car caught my eye and I was looking for people or dogs but not steel cable.
The result was one cyclist on the floor having somehow had the cable come over my my bike taking my hands off the bars by the wrist and then hitting my legs. The medical people out there will tell you the femur is the strongest bone and somehow i didn't break both legs. In A&E I discovered I'm a very lucky guy with damage to my legs that will heal, two shoulders and a neck that will need daily exercise to get mobile, two wrist that are healing nicely and a broken finger. So I'm thinking thats lucky.
The police were called and a local bike shop put this picture up on their social media, and then loads of other people come forward and say I hit that and was hurt but didnt do anything about it, WHY NOT! The estate has now decided not to use wire and replaced it with a highly visible gate.
If something is dangerous report it to the police, lets not wait till somebody gets seriously injured or killed