The Ljubljana Marshes Wheel is a wooden wheel that was found in the Ljubljana Marshes some 20 kilometres (12 mi) south of Ljubljana, the capital of Slovenia, in 2002. Radiocarbon dating, performed in the VERA laboratory (Vienna Environmental Research Accelerator) in Vienna, showed that it is approximately 5,150 years old, which makes it the oldest wooden wheel yet discovered.
It was discovered by a team of Slovene archeologists from the Ljubljana Insтιтute of Archaeology, a part of the Research Center at the Slovene Academy of Arts and Sciences, under the guidance of Anton Velušček.
Remains of pile dwellings were discovered in the Ljubljana Marshes as early as in 1875. Since 2011, the site has been protected as a UNESCO World Heritage Site as an example of prehistoric pile dwellings around the Alps, 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 3.5 by 7 metres (11 ft 6 in × 23 ft 0 in) in size, separated by approximately 2 to 3 metres (6 ft 7 in to 9 ft 10 in). 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 question of who invented the wheel remains unanswered, with evidence suggesting it emerged independently in multiple regions.
Though specific inventors aren’t known, the wheel’s development doesn’t appear to be a single breakthrough but rather a gradual accumulation of knowledge, skills, and adaptations over time.
Different cultures shaped the wheel to meet their unique needs, creating distinct designs and uses that evolved separately, each an innovation in its own right.