In the village of Šilalė, on the left bank of the Šakalė stream, there is the fifth largest stone in Lithuania—the Šilalė boulder. It is a state-protected natural and cultural heritage object. It is 3.66 m tall, 7.48 m long, and 5.48 m wide, and the largest circumference reaches 18.33 m. Granite consists of very large (up to 5-8 cm), unusually rounded, multi-layered crystals, surrounded by a much finer base mass. The finer material in the gaps of large crystals shatters and spills when exposed to wind, rain, temperature changes. Large elongated, rounded grains remain because they are quite hard and resistant to disintegration. The specific chemical elements that make up granites, testify to the special conditions under which granites form. The stone has long attracted the attention of the locals for its size, which is why it was called the Great Boulder. The boulder lies on the edge of a hill, which used to be surrounded by swamps on all sides. Kūlgrinda (stone pavement) was the passage through the swamps to the village of Šilalė. Legend has it that a son of the wind sleeps under a stone. Next to the boulder in 16th – 17th c. stood a Lithuanian temple with a fireplace and a stone altar.