Researchers are expressing astonishment at an unusual discovery within a remarkably well-preserved bird’s egg that has endured for over 1,700 years, revealing the presence of still-liquid content.

The egg was initially unearthed during excavation activities conducted between 2007 and 2016 at the Berryfields site in Buckinghamshire, southeast England.

This archaeological venture revealed a substantial, waterlogged pit or well, dating back to the Roman period in Britain between A.D. 270 and A.D. 300.

Within the pit, archaeologists uncovered a trove of artifacts, including pottery vessels, coins, leather shoes, animal bones, and a woven basket containing a collection of eggs.

Among these, one egg has captivated researchers due to the unexpected preservation of its liquid contents.

“Of particular interest were the eggs, which were a rare and exciting find. Despite the incredibly fragile nature of the eggs, the team on site were able to retrieve one intact,” a blog post from Buckinghamshire Council’s Heritage and Archaeology Team reads, Newsweek reported.

The dating of the pit where the egg was discovered indicates an age of at least 1,700 years, as indicated by Biddulph.

Written by B.C. Begley