Swiss archaeologists have discovered the remains of an ancient Roman bridge that crossed the River Zihl in Aegerten in the Canton of Bern. The discovery, made during construction work, uncovered over 300 preserved oak piles in the waterlogged soil of the former riverbed.

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Several oak pile tips, each several meters long, have been preserved and were pulled from the sediment using an excavator. Credit: Archaeological Service of the Canton of Bern, Joel Furrer