Field Survey Versus Excavation – Compatibility of Results Illustrated by the Example of Selected Sites from the A1 Motorway in the Włocławek Province, Poland

This paper reconsiders the compatibility of results from survey and subsequent excavations as their verification: the issues of detection of sites and the reliability of estimations of their size as well as their dating including the relative visibility of separate chronological units based on surface material are discussed here. This is presented through the example of archaeological investigations conducted due to the construction of the A1 motorway route within the former Włocławek Voivodeship.