In Pictures: Archaeologists uncover Europe's oldest stilt village

Beneath the turquoise waters of Lake Ohrid, the "Pearl of the Balkans", scientists have uncovered what may be one of Europe's earliest sedentary communities, and are trying to solve the mystery of why it sheltered behind a fortress of defensive spikes.

A stretch of the Albanian shore of the lake once hosted a settlement of stilt houses some 8,000 years ago, archaeologists believe, making it the oldest lakeside village in Europe discovered to date. Radiocarbon dating from the site puts it at between 6000 and 5800 BC.

"It is several hundred years older than previously known lake-dwelling sites in the Mediterranean and Alpine regions," said Albert Hafner, a professor of archaeology from Switzerland's University of Bern. "To our knowledge, it is the oldest in Europe," he told AFP.

Hafner and his team of Swiss and Albanian archaeologists have spent the past four years carrying out excavations at Lin on the Albanian side of Lake Ohrid, which straddles the mountainous border of North Macedonia and Albania.

And it is slowly revealing some astonishing secrets. During a recent dive, archaeologists uncovered evidence suggesting the settlement was fortified with thousands of spiked planks used as defensive barricades.

For the time being, scientists say it is possible to assume that the village relied on agriculture and domesticated livestock for food. "We found various seeds, plants and the bones of wild and domesticated animals," said Ilir Gjepali, an Albanian archaeology professor working at the site.

Analysis of the tree rings helps the team reconstruct the daily life of the area's inhabitants - providing "valuable insights into the climatic and environmental conditions" from the period, said Albanian archaeologist Adrian Anastasi.

A diver searching for archaeological material in Lake Ohrid, southeastern Albania.

Lake Ohrid is one of the oldest lakes in the world and has been around for more than a million years. Assisted by professional divers, archaeologists have been picking through the bottom of the lake often uncovering fossilised fragments of wood and prized pieces of oak.