It probably sheltered an active port to which testify the many remains of Amphoras, and became a point of unloading and a Roman supply centre.

The development and the enrichment of the city conveyed in the continuing enlarging and transformation of the river thermal baths, in the construction of new temples bordering the bank of Sebou river and in new dwellings such as the "House of Pavement" which adopted the plan of the rich residences of Volubilis and Spain.

In addition to its commercial and industrial functions which are behind its development, the town of Thamusida was to play a significant military role.

Under Commodus or Septimius Severus, an enclosure was built and which reemployed funerary steles and crushed a part of the pavement house, that indicated the fact that the work was dictated by the fear of a close or remote danger.

In the 3rd century, the city was always active as showed the extent of the river thermal baths and the density of the ceramic founds is the spot until occurred the final abandonment which took place between 274 and 285, but it was not known if it was due to the departure of the Army or to a posterior cause.

The site was abandoned around AD 285, when Diocletian moved the Roman limes of Mauretania Tingitana to the north, near Lixus.