The geology of Hanhikivi

Hanhikivi shale zone

The bedrock of the Hanhikivi cape is composed of independent shale zone, about 5 km² wide Hanhikivi conglomerate. Comparatively bold conglomerate occurrence is mostly forcefully shaled and includes mainly volcanic and subvolcanic sphericals. The shale zone continues under the sea and on the landside of the cape it confines to gabbrodiorite. Explore the deposit on the cape’s vast shore rocks!

Nationally valuable rocky area

The Hanhikivi cape includes 218,8 hectares of wide rocky area, which is nationally valuable for nature and landscape conservation. The rocky area is geologically very remarkable and the value of scenery is remarkable.

Giant’s rock

In the middle of the shore forest stands the 6 meters high giant, Hanhikivi – “Gooserock”. In the days of yore people imagined that nothing but a gobling, a devil or an ogre could have carried that kind of a stone to the place.

Now we know more about the erratic boulders. During the ice age, plateau glacier could move with it parts of rocks, sometimes even a long way, leaving permanent memories in nature – memories from the age when land was covered by ice.

According to an old story, centuries ago, when the shoreline located more to the east, gooses used to rest on the big erratic boulder during their migration. Consequently the stone got the name Hanhikivi – Gooserock.
The land has lifted up, the scenery has changed and generations have gone by, but the stone is still there. The photo has been taken in the early 1900’s.

The delimeter of the treaty of Nöteborg

The Treaty of Nöteborg, 1323, also known as the Treaty of Oreshek, is the peace treaty that set the first eastern border of Finland. The treaty was the first settlement between Sweden and Novgorod Republic regulating their border. The border began at Rajajoki going to the northwest across the Karelian Isthmus and ending on the coast of the Bothnian Bay. Hanhikivi is considered to be the delimeter of the Treaty of Nöteborg.
Hanhikivi is a fixed relic, the delimiter from a historical age and a nationally valuable object protected by antiquities act.