hɪz ɹᵻsˈɜːtʃ ʌŋkˈʌvɚd sˈɪkshˈʌndɹɪd ˈeɪɾi sˈɪks pˈɛtɹəɡlˌɪfz nˈoʊn æz ðə "ˈeɪʃæltən pˈɛtɹəɡlˌɪfz"ðæt ɑːɹ mˈeɪnli ɹˌɛpɹᵻzˈɛntˈeɪʃənz ʌv hjˈuːmənz, ˈænɪməlz ænd plˈænts æz wˈɛl æz dʒˌiːoʊmˈɛtɹɪk ɚɹˈeɪndʒmənts.
His research uncovered 686 petroglyphs (known as the "Aishalton Petroglyphs") that are mainly representations of humans, animals and plants as well as geometric arrangements.