In 2015, an interesting hillfort was discovered at Wysoka Wieś, Ostróda County, in north-eastern Poland (Fig. 1; W. Skrobot 2015, 123). It was characteristic because its yard was surrounded by 3–4 concentric lines of ramparts separated by dry moats (Fig. 2). In 2018, an archaeological evaluation of this site was conducted to acquire information about its chronology and cultural affiliation. The central and southern part of the site was strongly disturbed in the 20th century, when all the environs were cultivated for reforestation. The only remains of former habitation were discovered near the embankments, particularly in the ditch which ran along the main rampart, on its inner side, and on the main rampart itself. The relics included: a posthole located at the highest point of the embankment and loose stones – a probable paving – located in the above-mentioned ditch (Fig. 4). A radiocarbon dating of the charcoal collected from the soil beneath the stones gave a calibrated date between 542–397 BC with a probability of 91.3% (Fig. 5). The analysis of the pottery shards (Fig. 6:1–5) suggests that they can be linked with the 2nd group in the classification of ceramics of the West Balt Barrow Culture and can be dated to the turn of the Hallstatt D and La Tène A/B periods (Ł. Okulicz 1970, 24–38). These two chronologies correspond with each other and it can be assumed that the hillfort was in use during the end of the Early Iron Age and at the beginning of the La Tène Period.