It is not yet clear how the mud ends up on the road. The layer is thick: half a meter to a meter high in some places.
A huge breach has been made in the verge next to the motorway. Fire brigade and emergency services are on site.
According to the first information, it concerns a technical defect in a water pump. The road is closed locally to avoid accidents. The fire brigade is busy with the clean-up work, which could take hours.
