ɔːlðˈoʊ dˈeɪɾɪŋ ɪz dˈɪfɪkəlt, pˈɑːɾɚɹi ˈɛkskəvˌeɪɾᵻd ɪn nˈaɪntiːnhˈʌndɹɪd fˈɪfti sˈɪks ˈɪndᵻkˌeɪts ðætðə mˈaʊnd ænd ðˈɛɹfoːɹ pɹˈɑːbəbli ðə stˈoʊnz ˈɔːlsoʊ ɑːɹ nˌiːoʊlˈɪθɪk.
Although dating is difficult, pottery excavated in 1956 indicates that the mound (and therefore probably the stones also) are Neolithic.