⁹⁶Newman, Conor. Tara: An Archaeological Survey. Dublin: Royal Irish Academy for the Discovery Programme, 1997, pp. 53-9.

No evidence of an original entrance has yet been discovered. Although Newman has identified three possible locations for entrances that may have been later additions. One is in the south, where there seems to be a “gap in what is taken to be the palisade trench.” There is also evidence for a possible entrance in the north-west, and one at the eastern side of the monument. “This does not, however, preclude the possibility that there was an original entrance at any of these points; there is simply no evidence for one.“