I live near a large national park which has many “faint” trails, many of which are overgrown, notional only, and require “bushwhacking” to traverse. These are not numbered or even acknowledged by the park authority so they are not suitable for display on any public maps. We don’t want people expecting to find passable routes and getting lost! But my local hiking clubs have been exploring these historic trails for some 25 years. They have very good records and, in fact, they’ve recently printed off some 30 highly detailed maps using a base scale of 1:20,000! So, my question is; is there any way to have some kind of a private plugin, or other method of controlling and limiting access, that would only allow club members and other experienced hikers with the usual caveats to access our maps of these “faint” trails?