Viewed from the front, this hillfort does not look particularly special. What lies behind it is far more interesting. The best time to visit is the second half of autumn or spring. Why is it worth visiting in the second half of autumn or spring? Because that is when the trees – the hillfort is half hidden in a forest – have fewer leaves: in autumn some have already fallen, and in spring the branches are not yet fully in leaf. The fewer leaves on the trees, the better you can see the impressive surroundings of the hillfort. Climb up the hillfort and walk across the fairly spacious top to the other side – not every hillfort can boast such high, breathtakingly steep slopes. And if you have shoes suitable for off-road hiking and are not afraid of getting them muddy, we highly recommend going down the less steep foot of the hillfort (facing the hillfort steps, that is the left side of the hill) and plunging into the mysterious bluffs and ravines behind it, with streams babbling through them, and seeing other hillforts hidden there – usually undisturbed and unnamed. The Jaučakiai hillfort rises at the confluence of the Pilis and Piliakalnis streams. Deep ravines surround it to the north and south, and on the east is the rest of the promontory. On the ravine sides the slopes are steep, 10–12 m high. At the eastern foot of the hillfort there is an ancient settlement. Excavations here revealed a cultural layer up to 1.1 m thick containing hand-made pottery with a rough surface and wheel-thrown pottery, slag, stone projectiles, remains of hearths, pieces of clay daub and even a Roman coin. It is thought that Paštuva castle stood here. The lands of Paštuva are mentioned in historical chronicles from 1292, when the Teutonic Knights invaded. The Knights attacked Paštuva castle in 1369, and after a five-day siege the castle was destroyed. After the battle the Knights broke into the castle through a secret entrance. Some of the defenders surrendered, those who tried to resist were killed, and the castle's elder, Girdavas, was taken prisoner. The castle was rebuilt and mentioned again in 1413. From the second half of the 14th century the Lithuanians are thought to have called the castle and settlement Vilkija – Vilkija castle is mentioned in Vytautas's documents from the first half of the 15th century. Some historians believe it was the Wildenberg castle burned by the Teutonic Knights in 1388.