ðə dʒˈɜːmənz ˈɔːlsoʊ jˈuːzd ɐn ˈʌndɚɡɹˌaʊnd ɹˈoʊdweɪ æz ɐ pˈæsɪv dᵻfˈɛns ʃˈɛltɚ, loʊkˈeɪɾᵻd ˌʌndɚ ðə tɹˈæks, wˌɪtʃ pɹˈiːviəsli lˈɪŋkt ðɪ ˈæmbɐzˌæk ɹˈoʊd tə loʊkˈɑːɹnoʊ ˈævənˌuː, nˈaʊ pˈɑːɹtli wˈɔːld.
The Germans also used an underground roadway as a passive defense shelter, located under the tracks, which previously linked the Ambazac road to Locarno Avenue, now partly walled.