A similar effect is evident in my area, in which there is an unofficial mountain bike track. The track is well known in the mountain bike community, and the un

A similar effect is evident in my area, in which there is an unofficial mountain bike track. The track is well known in the mountain bike community, and the understanding is that it's location can be passed on by word of mouth, but it should generally not be publicly documented, for risk it will get closed down by the landowner. The landowner is a government owned utility and the land is unused, so bikers and local residents don't feel too may qualms about using the land. The track isn't on any of the online mapping services, but stands out like a sore thumb on the heat map. On the plus side, I can now find any tracks that I wasn't aware of!