Jättekast vid Flatsjön i gränsbygd

Landscape border between Småland and Blekinge, the border runs through gränsbäck and Flatsjön. South of the lake large blocky terrain with "runkesten" on rock (stone that you can get in rocking motion. Jerk on).

This area was a border area between Sweden and Denmark until 1658. Today the county border between Kronoberg and Kalmar runs along the border stream and through Flatsjön.

South of the lake, the terrain is large boulders with "runkesten" on rocky outcrops, i.e. rocks that can be jolted and jerked. These large stones, also known as boulders, are visible between the pines. Drift blocks are boulders of varying sizes that were caught by the ice sheet, ground into a more rounded shape and then left lying around when the ice sheet melted away. The blocks have often been moved very long distances by the ice and may consist of completely different rock types to those found in the surrounding landscape.

In folklore, boulders are called giant boulders. Legends say that giants cannot stand the sound of church bells, so they threw large stones at the churches to stop the noise.