Brutus must have moved into Lusitania from north of the River Tagus because no crossing of this river was mentioned by Appian. Therefore, he advanced from central Portugal to northern Portugal. He had the city of "Olissipo" (modern Lisbon) fortified. Talabriga (Marnel, near Águeda) must have been taken before the Crossing of the Durius because it is in the Centro Region of Portugal, which is to the south of this river. A fortified position was established at Vissaium (Viseu), also in the Centro region. As already noted, after devastating Lusitania Brutus also reached into southern Gallaecia.