I will speak only about the private land for now but most of the concerns and damages extend to the other lands as well. 

Eerib is not correct about the signage. There are a few Exclusion of Liability signs yes but eerib is failing to mention, on purpose or by being careless, that the signage actually says:

DO NOT ENTER. 
DANGER
NO TRESPASSING 

That is the signage for the lands on which eerib maps, seemingly despite the number of well intentioned people expressing concern and asking eerib to stop. Politely so far. 

I’ll ask again, do you want a cease and desist from the ACTUAL OWNER OF THE LAND?

Hint: Outdoor the company that owns Trailforks has chosen not to show the dangerous trails we are talking about for all the legal reasons I’ve expressed to you. They’re unsafe for most users and they’re on private property behind no trespassing signs. 
