The Brobacka nature preserve lies just north of the northern shore of Lake Mjörn. The greatest curiosity in this preserve are the half giant’s kettles in the cliff sides of the small Lake Åsjön. This type of kettle is thought to have been created where ice rivers formed when thawing ice rushed under the ice against the cliffs over long periods. Filled with large amounts of gravel and rocks the water blasted out the kettles we see today in the rift zones, an immense blasting process carried out over long periods of time. The kettles vary in size with the largest some 18 m in diameter.
In other parts of the preserve there are meadows with large oak trees and hazel groves. Some of these meadows are cleaned of old leaves and grass in the spring and scythed once a year. Since the lower parts of the area was once sea bottom, there are mussel and snail shells in the earth favouring such calcium dependent flora as lesser butterfly orchid, wood anemone, wolf’s bane and various scabious species. There are many cryptogam species as well, both mosses and lichen.
The preserve offers a number marked paths: meadow walks, paths along Lake Åsjön and through the giant kettle area, as well as hiking up on the mountain plateau where you’ll find a grove of evergreens and a small bog. You can enjoy the ravishing view over Lake Mjörn and take time for some birdwatching, especially on the windy western front where ospreys, eagles and buzzards soar. There is a special observation platform above Lake Åsjön.
In 1922 a section of Brobacka became the first nature area that was protected in the Älvsborg County. The preserve you see today was created in 1994 when the county board issued new rules and greatly increased the area from four to 17 ha. At the same time ownership and management was transferred to Västkuststiftelsen, a foundation created by the county to manage and care for specified nature preserves and outdoor facilities.
At the centre of the preserve you will find Högs torp, a small soldier’s cottage that’s stood there for more than a century. At the turn of the previous century, the cobbler Hög lived there with his family of seven on about 20 square meters (around 216 sq.ft). Today the cottage is used as a small information centre by the Alingsås chapter of the Swedish Society for Nature Conservation. There are plans for expanding the exhibition to include the special geological landscape in the preserve.
Click here for more information.
From county road 190 turn towards Alingsås on road 180. There is a parking area about 300 m down the road on the left side.