In the eastern parts of Bamble, the story is quite different. Here you will find nicely layered sedimentary rocks, which mostly consist of limestone, sandstone and slate. These rocks were formed when Norway was a part of a tropical sea, full of life, situated somewhere close to the equator approximately 500 million years ago.
You cross the boundary between these two different “worlds” as you head into the monumental limestone cliff “Høgenhei”, and in the immediate vicinity to this, you will find one of the geopark’s sites; Rognstranda. Here you can walk on the smooth surface of the old basement rock and at the same time study the limestone cliff on the other side of the bay. If you want to study the limestone in detail, you can do that in Steinvika near Langesund. This geopark site is full of fossils which gives an insight into life in the tropical sea that once flooded the area.
The origin of the rocks isn’t the only interesting stories to be told when it comes to the geology of Bamble, the area also has a mining history that can be traced back to the 16th century. Here they extracted large amounts of metals and industrial minerals. Examples are quartz, feldspar, apatite, zinc, lead, iron and nickel. The most famous mines are Tråk, Ødegårdens verk and Bamble nickel mines, all within the area of the old basement rocks.
Great hiking area near Rognstranda in Bamble. Beautiful forests and flora.
Welcome to the geosite in Steinvika
Tangen Fort lies at the outermost point on Langesundtangen, south of the town of…
Gallery Grindbakken is a small and exciting gallery by the water's edge at Stathelle.
"Krystallhuset" in Brevik was erected on the occasion Brevik 150th anniversary in 1995.
Brevik Town Museum is open every Sunday this summer
Valle, a gem of the archipelago with wealth of facilities, is located in the far south of…
A hidden pearl right in the center at Porsgrunn City Museum.
The childrens favorite place to visit, lots of activities.
Welcome to a unique porcelain experience in Porsgrunn!
Norway's only porcelain factory is located in Porsgrunn.
South of Porsgrunn, across Frierfjorden and further into Bamble by Herre, there is an…
As the first geopark in Scandinavia, Gea Norvegica became member of the Global Geoparks…
Learn more about the natural history of our planet.
Osebro is the best preserved part of Porsgrunn town.
Foldvik Family Park is an eldorado for families with an outstanding selection of fun…