The Malleco Viaduct, with its 103 meters high, and 124 years of life continues to give us great moments, its 348 meters long with nobility supporting the passage of heavy freight trains, or nobly go have emotive formations as this tourist and heritage train. Is the "Tren de la AraucanÃa", with the steam locomotive Mountain No. 820 (built in 1940 by Baldwin Locomotive Works), on special service with european and north american railfan tourists of railway touring company, on the last journey of four days.