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Grande curiosità, e parecchia gente, sabato alla giornata di porte aperte presso il cantiere della galleria di base del Ceneri di Alptransit a Sigirino. Si è trattato di un’occasione unica per osservare da vicino i lavori di realizzazione del tunnel. Stando ad AlpTransit San Gottardo, l'affluenza è stata di circa 6'500 visitatori, in grande maggioranza ticinesi, ma in parte provenienti anche dal resto della Svizzera e dalla Lombardia.
È stata particolarmente apprezzata la possibilità di accedere, lungo un percorso appositamente creato, al sistema di caverne sotterranee a supporto dei lavori di scavo, che hanno ormai raggiunto l'82% dell'intero sistema previsto, ovvero circa 33 chilometri di cunicoli. Un settore della galleria ha potuto essere ammirato a bordo di un treno turistico su gomma.
joe.p./pon
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