Summary:
- Archaeologists have discovered microscopic parasite eggs in the soil around Hadrian's Wall, which was a defensive wall built by the Romans in northern England.
- These parasites, such as roundworms and whipworms, likely caused diarrhea and stomach problems for the Roman soldiers stationed at Hadrian's Wall.
- The discovery of these parasites provides insights into the health and living conditions of the Roman soldiers who were responsible for guarding this important fortification.