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Externsteine

earth science Maturity 11-13 Next article →

The Externsteine are a distinctive sandstone rock formation located in the Teutoburg Forest. They sit near the town of Horn-Bad Meinberg in North Rhine-Westphalia, Germany. This formation is a tor, which is a large, free-standing rock outcrop. It consists of several tall, narrow columns that rise abruptly from the surrounding wooded hills.

Externsteine 2011
Externsteine 2011

The site is quite unique because it is a natural outcropping of sandstone in a region that is otherwise mostly devoid of rocks. Today, the long-distance hiking trail known as the Hermannsweg passes directly through the formation.

Externsteine aus der Luft crop
Externsteine aus der Luft crop

The geological history of the stones began about 100 million years ago during the early Cretaceous era. At that time, the area was near the edge of a large, shallow sea that covered much of Northern Europe. This sea laid down layers of Osningsandstein, a type of hard, erosion-resistant sandstone. About 70 million years ago, tectonic forces folded these originally horizontal layers into an almost vertical position.

Externsteine von Westen
Externsteine von Westen

Over thousands of years, weathering and erosion washed away the surrounding soil. This process left the hard sandstone standing as a series of pillars. The formation stretches for several hundred metres and ends in 13 highly visible, mostly free-standing pillars. Scientists number these pillars from I to XIII, moving from the northwest to the southeast.

Each pillar has its own unique features and names. The largest is rock I, also called the Grottenfels because it contains a cave. This rock is subdivided into parts Ia and Ib. Rock II is known as the Turmfels, or tower rock, because it rises high above the area. Rock III is called the Treppenfels, meaning stairs rock. A large gap separates rocks III and IV. Rock IV is known as the Wackelsteinfelsen because it once held a loose boulder at its top, though it is now fixed in place.

Externsteine Walpurigsnacht 2007
Externsteine Walpurigsnacht 2007

Humans have modified and decorated these rocks for many centuries. The Grottenfels contains a man-made grotto with three chambers connected by passages. The main chamber has a ceiling height of 5 metres. A side chamber is also 5 metres high but is only 3 metres wide. An inscription in this main chamber is dated to 1115, suggesting an altar was consecrated there. Another notable structure is the Höhenkammer, or high chamber, located on rock II. This chamber can be reached via a stairway in rock III and a wooden construction. It features an apse with a circular window, an altar, and carved columns.

Externsteine Relief 1862
Externsteine Relief 1862

The history of the site is filled with mystery and debate. Archaeological excavations have found Upper Paleolithic stone tools dating from about 10,700 BC to 9,600 BC. These finds, including microliths from the Ahrensburg culture, suggest nomadic groups used the stones for temporary shelter.

In the Middle Ages, the site was used as a hermitage and a Christian chapel. The famous Externsteine relief, a depiction of the Descent from the Cross, is located on the rock. While some thought this carving was from the 9th century, scholars now believe it dates to the 12th century. There is also a popular tradition claiming the site was a sacred Saxon place, but there is no archaeological evidence to confirm this.

The name of the rocks has many possible origins. Oldest recorded forms include Agistersten and Eggesterenstein from the year 1093. Some scholars suggest the name relates to the Westphalian word "Eckster," meaning magpie. Others link it to a giant named Ecke from medieval poetry. However, recent linguistic research suggests a different cause. The Germanic word "ag" means sharp or pointy. This suggests the name actually describes the physical geology of the sharp, rocky ridges.

Externsteine 1900
Externsteine 1900

Understanding the Externsteine helps us connect geology, history, and linguistics. The stones show how natural processes like sedimentation and folding create unique landscapes. They also show how humans adapt to their environment by carving living spaces into the earth. From ancient nomadic hunters to medieval monks, many different people have left their mark on these sandstone towers. The site remains a significant landmark in the Teutoburg Forest today.

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🖼️ Images & Media (8)
File:Externsteine von Westen.jpg
Externsteine von Westen.jpg
File:Externsteine Relief 1862.jpg
Externsteine Relief 1862.jpg
File:Externsteine 2011.jpg
Externsteine 2011.jpg
File:Externsteine aus der Luft crop.jpg
Externsteine aus der Luft crop.jpg
File:Externsteine Elias van Lennep 1663.png
Externsteine Elias van Lennep 1663.png
File:Die Gartenlaube (1862) b 381.jpg
Die Gartenlaube (1862) b 381.jpg
File:Externsteine 1900.jpg
Externsteine 1900.jpg
File:Externsteine Walpurigsnacht 2007.jpg
Externsteine Walpurigsnacht 2007.jpg
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