The Ljubljana Marshes Wheel is a wooden

wheel A wheel is a circular component that is intended to rotate on an axle bearing. The wheel is one of the key components of the wheel and axle which is one of the six simple machines. Wheels, in conjunction with axles, allow heavy objects to be ...

that was found in the Ljubljana Marsh some south of

Ljubljana Ljubljana (also known by other historical names) is the capital and largest city of Slovenia. It is the country's cultural, educational, economic, political and administrative center. During antiquity, a Roman city called Emona stood in the ar ...

, the capital of

Slovenia Slovenia ( ; sl, Slovenija ), officially the Republic of Slovenia (Slovene: , abbr.: ''RS''), is a country in Central Europe. It is bordered by Italy to the west, Austria to the north, Hungary to the northeast, Croatia to the southeast, and ...

, in 2002.

Radiocarbon dating Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon. The method was de ...

, performed in the VERA laboratory (

Vienna Environmental Research Accelerator The Vienna Environmental Research Accelerator, VERA, is a particle accelerator. It is operated by the University of Vienna and is dedicated to Accelerator Mass Spectrometry (AMS). It started operation in 1995. The system is a 3-MV Pelletron type ...

) in

Vienna en, Viennese , iso_code = AT-9 , registration_plate = W , postal_code_type = Postal code , postal_code = , timezone = CET , utc_offset = +1 , timezone_DST ...

, showed that it was approximately 5,100-5,350 years old, which makes it the oldest wooden wheel yet discovered. It was discovered by a team of Slovene archeologists from the Ljubljana Institute of Archaeology, a part of the Research Center at the

Slovene Academy of Arts and Sciences The Slovenian Academy of Sciences and Arts ( sl, Slovenska akademija znanosti in umetnosti (SAZU)) is the national academy of Slovenia, which encompasses science and the arts and brings together the top Slovene researchers and artists as members ...

, under the guidance of Anton Velušček.

The archaeological site

Remains of

pile dwellings Stilt houses (also called pile dwellings or lake dwellings) are houses raised on stilts (or piles) over the surface of the soil or a body of water. Stilt houses are built primarily as a protection against flooding; they also keep out vermin. The ...

were discovered in the Ljubljana Marsh as early as in 1875. Since 2011, the site has been protected as a

UNESCO World Heritage Site A World Heritage Site is a landmark or area with legal protection by an international convention administered by the United Nations Educational, Scientific and Cultural Organization (UNESCO). World Heritage Sites are designated by UNESCO for ...

as an example of

prehistoric pile dwellings around the Alps Prehistoric pile dwellings around the Alps are a series of prehistoric pile dwelling (or stilt house) settlements in and around the Alps built from about 5000 to 500 BC on the edges of lakes, rivers or wetlands. In 2011, 111 sites located variousl ...

, a special form of dwellings in areas with lakes and marshes. The archaeologists at the excavation site identified over one thousand piles in the bed of the Iška River, near Ig. They reconstructed the dwellings of in size, separated by approximately . The analyses of the piles revealed that the dwellings were repaired each year and that a new house had to be built on the same place in as little as 10 to 20 years. The earliest inhabitants settled in the region as early as 9,000 years ago. In the

Mesolithic The Mesolithic ( Greek: μέσος, ''mesos'' 'middle' + λίθος, ''lithos'' 'stone') or Middle Stone Age is the Old World archaeological period between the Upper Paleolithic and the Neolithic. The term Epipaleolithic is often used synonymo ...

, they built temporary residences on isolated rocks in the marsh and on the fringe, living by hunting and gathering. The permanent settlements were not built until the first farmers appeared approximately 6,000 years ago during the

Neolithic The Neolithic period, or New Stone Age, is an Old World archaeological period and the final division of the Stone Age. It saw the Neolithic Revolution, a wide-ranging set of developments that appear to have arisen independently in several pa ...

The wooden wheel

The wooden wheel belonged to a prehistoric two-wheel cart – a pushcart. Similar wheels have been found in the hilly regions of Switzerland and southwest Germany, but the Ljubljana Marshes wheel is bigger and older. It shows that wooden wheels appeared almost simultaneously in

Mesopotamia Mesopotamia ''Mesopotamíā''; ar, بِلَاد ٱلرَّافِدَيْن or ; syc, ܐܪܡ ܢܗܪ̈ܝܢ, or , ) is a historical region of Western Asia situated within the Tigris–Euphrates river system, in the northern part of the ...

and Europe. It has a diameter of and is made of

ash Ash or ashes are the solid remnants of fires. Specifically, ''ash'' refers to all non-aqueous, non-gaseous residues that remain after something burns. In analytical chemistry, to analyse the mineral and metal content of chemical samples, ash ...

wood, and its axle is made of oak. The axle was attached to the wheels with oak wood wedges, which meant that the axle rotated together with the wheels. The wheel was made from a tree that grew in the vicinity of the pile dwellings and at the time of the wheel construction was approximately 80 years old. It appears that the wheel itself is primarily made of two planks of wood which are held together with four cross braces. The cross braces appear to have been held in place simply by a tenon arrangement, the braces being fitted into tenoned slots carved into the two main wheel sections.

The archaeological site

The wooden wheel

See also

References

Further reading