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The Santa Marina tunnel, the longest tunnel on the Madrid-Extremadura High Speed Line built by Sando, has entered service.
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The largest high-speed tunnel in Extremadura, built by Sando, enters into operation

The Santa Marina tunnel, the largest tunnel on the Madrid-Extremadura High Speed Line, has been brought into service along with the rest of the route between Plasencia and Badajoz. This tunnel, built by Sando in a joint venture, belongs to the…