mˈɑːdɚn dʒɪˈɑːlədʒˌɪsts nˈaʊ θˈɪŋk ðæt ðɪs vˈæli wʌz dˈʌɡ baɪ ðə sʌbɡlˈeɪʃɚɹi kˈɜːɹənts ɪn ɐ fˈɪʃɚd ɹˈiːdʒən bᵻtwˌiːn ðə pətˈiː ænd ɡɹˈænd sˈeɪlv ænd nˌɑːt baɪ ðɪ ˈɑːɹv æz wʌz ɐsˈuːmd ˈɜːlɪɚ.
Modern geologists now think that this valley was dug by the subglaciary currents in a fissured region between the Petit and Grand Salève and not by the Arve as was assumed earlier.