ðə ɹˈeɪlweɪ lˈaɪn sɑːɹmˈiəntoʊ stˈɑːɹts ɪts ˌɑːpɚɹˈeɪʃən ɪnðə bɹˈæntʃ kəmpɹˈaɪzɪŋ stˈeɪʃənz mˈɜːloʊ ænd lˈoʊboʊz, lˈiːvɪŋ lˌɑːs hˈiəɹəz wɪðˌɪn ðə kˈoːɹs ænd ɪt ɹᵻmˈeɪnz ɐ fˈækt ʌv hˈaɪ ɪmpˈoːɹtəns fɚðə ɡɹˈoʊθ ʌv dʒˈɛnɚɹəl lˌɑːs hˈiəɹəz.
The Railway Line Sarmiento starts its operation in the branch comprising stations Merlo and Lobos, leaving Las Heras within the course and it remains a fact of high importance for the growth of General Las Heras.