Archaeology
Ancient submerged bridge in Spain reveals that humans inhabited Mediterranean island nearly 6,000 years ago
A submerged, human-constructed limestone bridge found inside a cave on a Spanish island is much older than previously thought, pushing back the record of when humans inhabited the location, a new study finds.
Researchers discovered the limestone bridge in 2000 during a scuba-diving expedition inside the flooded cave in Mallorca, a Mediterranean island located off the eastern shore of Spain's mainland. At the time, researchers determined that the 25-foot-long (7.6 meters) bridge, which consists of large limestone blocks stacked on top of each other, was built around 4,400 years ago, according to a study published Friday (Aug. 30) in the journal Communications Earth & Environment.
"This dating was based on pottery fragments that were found inside the cave," lead author Bogdan Onac, a professor of geology at the University of South Florida, told Live Science. "But now we know that this [date] was wrong."
In addition to the broken artifacts, the cave was littered with bones from a now-extinct goat-antelope known as Myotragus balearicus, according to a statement from the university.
However, when people occupied the cave still remained unclear.
Related: Ancient humans used cave in Spain as burial spot for 4 millennia, 7,000 bones reveal
Even though Mallorca is a large island, it was one of the last to be inhabited in the Mediterranean. In contrast, Cyprus and Crete are considered to be the earliest islands in the area and were occupied at least 9,000 years ago, according to a study in the journal Science.
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