Europe is experiencing an intense ongoing dry spell. It's showing long-submerged traces of the past.

By the end of August, almost half of the continent was in a warning condition, which is marked by a lack of soil hydration and negative effects on vegetation. In August, a senior researcher at the European Commission's Joint Research Center told Sky News that Europe could be in for a bad year.

As climate change pushes temperatures to new extremes, a growing body of research suggests that the one sweeping Europe are becoming more intense.

The sites and artifacts from megalithic monuments to ancient bridges are still being unearthed by the Europeans.

A prehistoric 'Spanish Stonehenge' reemerges in a reservoir in Spain

The Dolmen of Guadalperal, sometimes also known as
The Dolmen of Guadalperal, which is normally underwater, in Spain's Valdecanas reservoir during a drought, on July 28, 2022.
Pablo Blazquez Dominguez/Getty Images

The Dolmen of Guadalperal, dubbed "Spanish Stonehenge", were revealed when the water levels in Spain's Valdecanas reservoir dropped to 28% of their capacity.

An archaeologist from Madrid's Complutense University said it was a surprise to be able to access it. Cedillo would like to study the monument before it is submerged again.

Dozens of megalithic stones are believed to date to 5000 BC. It was discovered by a German archaeologist in the 1920's and is normally underwater. It has only been fully visible four times since then.

Angel Castao, president of Races de Peralda, told Atlas Obscura that he had been told all his life about the dolmen. I had seen some of it peeking out from the water, but this is the first time I've seen it completely. You can appreciate the entire complex for the first time in many years.

Extreme drought conditions unearthed hunger stones etched with warnings 

A view of the 'hunger stone,' which dates back to 1616.
A view of the "hunger stone," which dates back to 1616, revealed by low water levels in the Elbe River, between the Czech Republic and Germany, in 2018.
REUTERS

In August, The Miami Herald reported that centuries-old boulders, known as "hunger stones," reappeared as rivers in Europe ran dry due to the lack of rain.

The banks of the Elbe River are home to one such stone. According to a translation from a study, the boulder is engraved with a warning in German: "If you see me, weep"

The Czech researchers wrote in the study that the boulders were "chiselled with the years of hardship" and warned of the consequences of a dry spell.

A bad harvest, lack of food, high prices and hunger for poor people were all said to have been caused by the dry spell. The stone commemorates 1417, 1616, 1707, 1746, 1790, 1800, 1812, 1830, 1842, 1868, 1892, and 1893.

WWII-era shipwreck and bombs found in Italy's shrinking Po River

The barge was sunk during the Second World War by the Germans in 1943 and totally re-emerged due to the worst drought since the seventies which is affecting the Po river and the entire Po valley.
A WWII-era barge that reemerged in Italy's Po River, seen on July 27, 2022.
Nicola Marfisi/AGF/Universal Images Group via Getty Images

Italy's largest river is experiencing its worst dry spell in 70 years. The barge, which was used during the World War II, was found in June.

Unexploded bombs from WWII are seen on dry waters in Italy's Po river on August 4, 2022.
Unexploded bombs from WWII are seen on dry banks in Italy's Po River, on August 4, 2022.
Nicola Ciancaglini/Ciancaphoto Studio/Getty Images

A 1,000-pound bomb from World War II was found by fishermen in July by the Italian river.

The bomb was found by fishermen on the bank of the River Po due to a decrease in water levels caused by the dry spell. More than 3000 people were evacuated so the bomb could be removed.

Ancient imperial bridge revealed in Italy's Tiber River

The ruins of the ancient Roman Neronian bridge, emerge from the river bed of the Tiber river, in Rome, Monday, Aug. 22, 2022.
The ruins of an ancient Roman bridge emerged from the river bed of the Tiber River, in Rome, on August 22, 2022.
AP Photo/Gregorio Borgia

The bridge is said to have been built during the rule of Roman Emperor Nero. The bridge is usually under water in Italy.

The bridge is thought to have had four piers, but two were dismantled in the 19th century. During the dry part of the year, one of the bridge's piers can be seen.

"Because the water level of the river is so low, we're able to see a lot more of the piers of the bridge that we normally could," Majanlahti said.

Once-flooded Spanish village is unearthed 

Overview of the ancient village of Aceredo that had been submerged in Spain. Picture taken February 10, 2022.
Overview of the ancient village of Aceredo that had been submerged in Spain, on February 10, 2022.
REUTERS/Miguel Vidal

After a dam on the Spanish-Portuguese border was drained due to a lack of rain, a once-submerged village came back to life. The ruins of the ancient village of Aceredo in Spain's northwestern Galicia region are attracting tourists after being submerged in water for decades.

Some locals think it's a sign of what's to come.

I feel like I'm watching a movie. The 65-year-old from the area said that he felt sad. "My feeling is that this is what will happen as a result of climate change."