The King of the Avars started to build a trench from the Tisza river to the Danube
In numerous settlements alongside the Tisza river the legend still prevails that the river used to flow in a different bed, that is, the original place of the water is often kilometres away from the current Tisza. These stories are way older that the regulation of the Tisza and the establishment of oxbows.
The empty riverbed located by the town Jászárokszállás is still known and remembered as Csörsz árka (Csörsz Trench). The Trench was named after Csörsz – an Avar king – who fell in love with Délibáb (Mirage), the daughter of the Longobardian king. The would-be father-in-law gave his consent to the marriage only on condition that Csörsz would come to meet his bride on the surface of the water. This is why Avars began to build the trench between the Tisza and the Danube rivers. However, the wedding did not take place in the end, as the bridegroom got killed by a thunderbolt. Legend tells us that in summers, Délbáb in love keeps rambling in the unfinished trench in search of her royal lover.