A Roman-constructed food storage container that served as a primitive refrigerator for traveling soldiers was recently discovered in Bulgaria by Polish archeologists.

Lead archeologist, Piotr Dyczek, a professor at the University of Warsaw Antiquity of Southeastern Europe Research Centre, uncovered the ancient fridge at an excavation site located near the town of Svishtov, according to a report from Science in Poland – a science news outlet run by the Polish Press Agency.

The excavation site was Novae – a legionary fortress of the Roman Empire that was built in northern Bulgaria on the Danube River.

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Archeologists excavated the fridge from the fortress’s Sector XII on Friday, Oct. 7, a site photo shows, according to FOX 11 Los Angeles.

An ancient Roman food storage device

An ancient Roman "refrigerator" was found in Bulgaria at the Novae legionary fortress by Polish archeologists in October 2022. (Piotr Dyczek)

Inside the fridge, Dyczek and his team reportedly found ceramic plates, dish fragments and animal bones.

The archeologists examined the "preserved bone fragments" and found "traces of thermal treatment," which likely means the meat stored in the fridge was baked, according to Science in Poland.

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Other artifacts the team found were coins, wall strings, quern-stones, weaving and fishing weights, spindle whorls, pits with bone and vessel fragments, charcoal particles, a bowl fragment and an incense container that may have been used to repel insects, the science outlet reported.

The ancient refrigerator reportedly stands out because the storage containers rarely survive building reconstructions, Dyczek told Science in Poland.

Ancient ruins at the Novae fortress in Bulgaria

Ruins of the ancient Roman fortress Novae remain standing in Bulgaria. The fortress was built thousands of years ago near the Danube River. (iStock)

Historic records show Roman soldiers were stationed at Novae from the first century A.D. until the mid-fifth century A.D.

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"At that time, Novae was slowly transforming into a civilian city," said Dyczek, in a statement. "Also thanks to the latest finds, we obtained enough data to be able to recreate that part of the history of this ancient settlement, which until now was shrouded in mystery."

The ancient Roman fridge is one of many discoveries Polish archeologists have made in Novae.

Columns stand in middle of ancient fortress Novae

Walls and columns are still standing at the ancient Roman fortress Novae, which is located near the town of Svishtov (Bulgarian for "candle") in Bulgaria. (iStock)

Researchers have found fragments of ceramic and lead pipe water supply systems in the area that might’ve been used for thermal baths, Science in Poland reported.

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An approximate 6.2-mile aqueduct and two large water tanks are believed to have provided the Bulgarian-based Roman army uninterrupted access to water.