''Murus gallicus'' or Gallic wall is a method of construction of

defensive walls A defensive wall is a fortification usually used to protect a city, town or other settlement from potential aggressors. The walls can range from simple palisades or earthworks to extensive military fortifications with towers, bastions and gates ...

used to protect

Iron Age The Iron Age is the final epoch of the three-age division of the prehistory and protohistory of humanity. It was preceded by the Stone Age ( Paleolithic, Mesolithic, Neolithic) and the Bronze Age ( Chalcolithic). The concept has been mostl ...

hillfort A hillfort is a type of earthwork used as a fortified refuge or defended settlement, located to exploit a rise in elevation for defensive advantage. They are typically European and of the Bronze Age or Iron Age. Some were used in the post-Roma ...

s and ''

oppida An ''oppidum'' (plural ''oppida'') is a large fortified Iron Age settlement or town. ''Oppida'' are primarily associated with the Celtic late La Tène culture, emerging during the 2nd and 1st centuries BC, spread across Europe, stretch ...

'' of the La Tene period in Western Europe.

Basic features

The distinctive features are: * earth or rubble fill * transverse cross beams at approximately 2 ft (60 cm) intervals * longitudinal timbers laid on the cross beams and attached with mortice joints, nails, or iron spikes through augered holes * outer stone facing * cross beams protruding through the stone facing

Technique and utility

The technique of construction and the utility of the walls was described by

Julius Caesar Gaius Julius Caesar (; ; 12 July 100 BC – 15 March 44 BC), was a Roman general and statesman. A member of the First Triumvirate, Caesar led the Roman armies in the Gallic Wars before defeating his political rival Pompey in a civil war, ...

in his ''

Commentaries on the Gallic Wars ''Commentarii de Bello Gallico'' (; en, Commentaries on the Gallic War, italic=yes), also ''Bellum Gallicum'' ( en, Gallic War, italic=yes), is Julius Caesar's firsthand account of the Gallic Wars, written as a third-person narrative. In it Ca ...

'':

"But this is usually the form of all the Gallic walls. Straight beams, connected lengthwise and two feet distant from each other at equal intervals, are placed together on the ground; these are morticed on the inside, and covered with plenty of earth. But the intervals which we have mentioned, are closed up in front by large stones. These being thus laid and cemented together, another row is added above, in such a manner, that the same interval may be observed, and that the beams may not touch one another, but equal spaces intervening, each row of beams is kept firmly in its place by a row of stones. In this manner the whole wall is consolidated, until the regular height of the wall be completed. This work, with respect to appearance and variety, is not unsightly, owing to the alternate rows of beams and stones, which preserve their order in right lines; and, besides, it possesses great advantages as regards utility and the defense of cities; for the stone protects it from fire, and the wood from the battering ram, since it he woodbeing mortised in the inside with rows of beams, generally forty feet each in length, can neither be broken through nor torn asunder."

Examples

About 30 structures of this type have been excavated, mainly in

Gaul Gaul ( la, Gallia) was a region of Western Europe first described by the Romans. It was inhabited by Celtic and Aquitani tribes, encompassing present-day France, Belgium, Luxembourg, most of Switzerland, parts of Northern Italy (only during ...

, but extending to the upper reaches of the

Rhine ), Surselva, Graubünden, Switzerland , source1_coordinates= , source1_elevation = , source2 = Rein Posteriur/Hinterrhein , source2_location = Paradies Glacier, Graubünden, Switzerland , source2_coordinates= , so ...

and

Danube The Danube ( ; ) is a river that was once a long-standing frontier of the Roman Empire and today connects 10 European countries, running through their territories or being a border. Originating in Germany, the Danube flows southeast for , p ...

. The example at the sea promontory fort of Le Camp d'Artus, at Huelgoat, was excavated and reported by

Mortimer Wheeler Sir Robert Eric Mortimer Wheeler CH CIE MC TD (10 September 1890 – 22 July 1976) was a British archaeologist and officer in the British Army. Over the course of his career, he served as Director of both the National Museum of Wales an ...

. At

Manching Manching is a municipality in the district of Pfaffenhofen, in Bavaria, Germany. It is situated on the river Paar, 7 km southeast of Ingolstadt. In the late Iron Age, there was a Celtic settlement, the Oppidum of Manching, on the location ...

an earlier ''murus gallicus'' wall was rebuilt in the ''pfostenschlitzmauer'' style.

Comparison with other construction styles

The ''murus gallicus'' contrasts with other construction styles: * '' Pfostenschlitzmauer'' – characterised by upright wooden posts in the outer wall, typical in central Europe. * Dacian Wall – inner and outer stone walls reinforced with inner horizontal timber tie beams.

References

Sources

* ''Commentaries on the Gallic Wars'',