The course of Watling Street may be traced over Bexley Heath, where, too, there exist deep pits, widening into vaults below, and probably of British origin.
The Roman Watling Street passes from east to west 3 m.
The Roman road of Watling Street crossed the Cheviots at Brownhartlaw (1664 ft.), close to the camp of Ad Fines, by means of which the warlike Brigantes on the south and the Gadeni and Otadeni on the north were held in check, while another Roman road, the Wheel Causeway, passed into Scotland near the headwaters of the North Tyne and Liddel.
Rhe boundary between English and Danes established by the eace of 8~8 is not perfectly ascertainable, but a document of a few years later, called 0 Alfred and Guthrums frith, gives the border as lying from Thames northward up the Lea to its source, then across to Bedford, and then along the Ouse to Watling Street, the old Roman road from London to Chester.
Alfreds enlarged kingdom was far more powerful than any one of the three new Danish states which lay beyond the Lea and Watling Street: it was to be seen, ere another generation was out, that it was stronger than all three together.