The hill fort located on the shore of Lake Alaušo is one of the most significant archaeological sites included in the Register of Cultural Heritage. This unique monument, dating from the 1st millennium AD to the 2nd millennium BC, is situated just 100 meters from the eastern shore of the lake, on a distinct hill. The platform of the hill fort is quadrangular and elongated in a north-south direction, covering an area of 28x16 meters. At the southern edge, there is a system of protective embankments and ditches, while on the northern side of the platform, a 9-meter-wide terrace remains.
The slopes here are steep, reaching heights of up to 14 meters. The cultural layer of the hill fort reveals remnants
of an ancient settlement, including fragments of molded pottery, clay plaster, and fire pits. Unfortunately, the appearance of this hill fort changed significantly in the 20th century due to agricultural activities and plowing conducted throughout the area.
At the foot of the hill fort, a recreational area named Maneičių has been established, where visitors can relax and enjoy nature. According to legend, the Maneičių Hill Fort once housed the castle of Duke Alaušas. The legend states that the duke deeply loved this large, clear lake and, upon his death, requested that his ashes be scattered into its waters. The people fulfilled his wish, and the lake was named Alaušas in honor of the duke.