A COLLAPSED section of Chester’s Roman wall is due to reopen on Saturday after a two year closure.
Pain-staking repairs began last summer on the affected 25m section alongside Chester Grosvenor hotel.
Workers are now putting the finishing touches to the reconstruction and taking precise measurements so the movement of the wall can be monitored.
The exact cause of the collapse is unknown but is thought to be due to the way the wall was patched and fixed in the past as the collapse happened at the junction of two repairs.
Rainwater seeped down between the paving stones of the wall walk causing a separation between the previous repairs, leaving a narrow section of wall unstable.
Archaeologists took the opportunity to gain a greater understanding of how the walls were built by making careful records as it was dismantled.
The wall has been rebuilt with stone plus modern engineering materials designed to bind the various structures together, using the ancient stones in their original locations as far as possible.
In the past, many important towns were defended by walls but today only at Chester does the complete two-mile circuit survive.
They were first built by the Romans about 1,900 years ago and then extended and developed in the Saxon period and by the Normans.
The walls survive today because from the 18th century they were used as a fashionable walk and public amenity.
The wall was defended by gates and towers, many of which survive. Investigations revealed the remains of a Roman watch tower at the location of the collapse.
European Union money will pay for the repair and restoration of the towers. De-vegetation of the walls has also taken place.