This is the High Star Ranch Trail System. I would like to flesh out the tags but, having never been, I am not actually sure what the access restrictions are (e.g., their website calls the network "private" but all ages welcome all the time, and City Weekly (8/13/20) said land use is free and open to the public all the time. Also, I don't know if foot traffic is allowed on their trails). https://www.highstarranch.com/high-star-trail-system/