Historians hypothesize that Stalas Hill entered the territory of the Kreivoji Castle. The Kreivoji Castle and its embankments have been researched in fragments. In 1955 it was revealed that there were piles of clay on the edges. On the southern edge of the hill, pieces of burnt clay were observed. This suggests that people once lived here. In 1975, 1995, exploratory archeological research of the surface of this hill revealed a cultural layer and fine pottery dating back to the 14th century.