False portal dolmen - dolmen (often trough-like ), having an imitation of a portal of a tiled dolmen , very often - with an imitation of an inserted dolmen cork carved in the portal material. Most likely, they appeared in the period of decline of the dolmen culture , as a naive attempt to hide the true entrance to the dolmen from the robbers. This imitation, as proved, had no cult significance - from the side of the inner chamber of dolmens on the inner wall opposite the imitation of cork, its imitation was never done.
Strictly speaking, any dolmen that has one of the following deviations from the canon can be called false-portal: the inlet on the smaller of the two trapezoidal plates and not on the larger, imitation of the inserted cork on any of the dolmen plates, the hole directed towards the top of the mountain (and not vice versa and not towards the source of water, as usual). False-portal is also a dolmen with a hole in the side plate. Dolmens with two holes are very rare and do not belong to false-portals (all known ones have at least 1 hole on the pediment plate).