Before enactment of Civ. Code 1009(b) in 1972, an offer to dedicate private land to public use could be implied by law when the public used the land openly and continuously, as if the users believed the public had a right to do so, without objection by the landowner.  This decision affirms a decision denying a claim to quiet title to trails over Martha’s land based on that doctrine.  To establish an implied easement, it was necessary to show that the public–not just a small group of neighbors–used the property.  Here, substantial evidence supported the trial court’s deteermination that only neighbors, not the general public, used the trails on Martha’s property.  Also, substantial evidence supported the trial court’s finding that Martha took reasonable steps to deter trespassing on its property by maintaining and repairing fences across trails and posting no trespassing signs.