Construction of the A5 highway east bypass of Biel; 12.6 m diameter drill head of TBM © Chriusha (Хрюша) CC-BY-SA-3.0

Construction of the A5 highway east bypass of Biel; 12.6 m diameter drill head of TBM © Chriusha (Хрюша) CC-BY-SA-3.0

Construction of the A5 highway east bypass of Biel; 12.6 m diameter drill head of TBM © Chriusha (Хрюша) CC-BY-SA-3.0