sˈʌmwɛɹ nˌɪɹ ðə wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɪksti z, ðə kˈeɪv ˈɛntɹəns wʌz ɛnlˈɑːɹdʒd fɹʌm ɪts ɚɹˈɪdʒɪnəl ˈeɪtiːn" wˈaɪd kɹˈæk ɪn ˈɔːɹdɚ tʊ ɐkˈɑːmədˌeɪt stˈɛɹz fɔːɹ tˈʊɹz.
Somewhere near the 1860s, the cave entrance was enlarged from its original 18" wide crack in order to accommodate stairs for tours.