Tideway workers have begun work on digging a hole with a 30m diameter on the banks of the River Thames to start building the Thames Tideway Tunnel, known as London's 'super sewer'.
The hole will mark the central point of the 16-mile tunnel, which will wind underneath the banks of the river from Acton in the West to Stratford in the East at depths of up to 66m.
The super sewer will prevent the tens of millions of tonnes of raw sewage that currently pollute the river every year, due to a lack of capacity in the current Victorian sewers which can no longer cope with the demand of London's ever-increasing population.
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