Erratic Boulder in Opava

The Erratic Boulder in Opava is a granite stone carried here from distant regions during the ice age and stands in the Město district. Its surface bears characteristic scratches and grooves left by the moving ice masses.

The stone was discovered in 1958 in a sand quarry and dates from the last ice age thousands of years ago. During that time, ice sheets extended far south from the north, carrying this rock mass with them before melting and leaving it behind here.

Local residents view this stone as a witness to the ice age past and a reminder of nature's power in shaping the land. Many visitors come to imagine the immense forces that moved such massive rocks over hundreds of kilometers.

Visitors can view the stone from outside and examine the scratches on its surface closely to understand the movements of ancient ice masses. It is advisable to be careful during rain or wet conditions, as the surface can become slippery.

The rock does not originate from the local area but was transported by Scandinavian glaciers from the north. The exact source region can be traced through its mineral composition, making this stone a natural pointer to the extent of ice age expansion.

Location: Město

Height: 1.8 m

Length: 1.1 m

Width: 2.1 m

GPS coordinates: 49.93624,17.90554

Latest update: December 13, 2025 11:43