Title says it all.

If you're out at Sunderbruch on this day and time, be aware of the equestrians that will be riding the trails.

If you encounter an equestrian on a "hike/bike" trail, stop and get off your bike and let them know they are on a trail that was not designed for their type of riding. That's pretty much all you can do.

Let me know, via PM, if anything like this happens so I can forward on to the City.

Be safe.