The hillfort is located in the village of Gyvoliai, on the right bank of the Virvytė River, formed by the confluence with an unnamed stream. The hillfort site is 40x30 m in size, oval, elongated in a south-north direction, with a perimeter of 100-200 m. On the southern and eastern edges of the site, there is a rampart that is about 60 m long, 2 m high, and 8-13 m wide. The outer slope of the embankment is 4 m high and descends into a 50 m long, 17 m wide and 1.5 m deep ditch. The slopes of the hillfort are steep, 11 m high. There are several legends about the Gyvoliai mound. One tells that in ancient times, a sacred fire burned on the mound, which was guarded and tended by priestesses. There was a temple here. Another legend says that during the times of serfdom, people were punished and beaten on the hillfort. Yet another legend says that when the Swedes invaded, they ordered pregnant women to carry the hill away in their aprons. That is why this hillfort is also called Švedkalnis (Swedish Hill).