Note: could not establish a real track/path here, although it does appear at the beginning to be real (and the 3Dshapes data suggests something on the ground because of the "blind" ways.

Check whether there are really two almost parallel tracks/paths here (GPS is not accurate due to tree cover and accidence; there are in fact many parallel paths at different levels, quite close to each other in this area).

Same issue regarding almost parallel tracks/paths as the one close by

The MTB route is real (though not marked out by forest area limits in OSM; questionn is what this track is (does it exist?)

The Tees Railway Viaduct (unfortunately) was demolished and therefore no longer exists, so it is strange to find it on the regular map (no problem with having the data in OSM, but surely it should not show up as a structure?).