Archaeologists have estimated that the ring castle could hold a 5,000-man garrison, located in 48 longhouses.

Archaeologists estimate that as many as 20,000 men, women and children were once buried in the cemetery, which was in use from about 1700 to 1795.

Archaeologists estimate that there are 15,000 to 100,000 southern megaliths in the Korean Peninsula.

Archaeologists estimate the drawings are several hundred years old.

Archaeologists overseeing the excavations estimated that the burial ground, which extends beyond the proposed American Embassy site, could contain more than 2,000 bodies.

Archaeologists estimate that between 277 to 517 people lived in the village.

Archaeologists estimate the plate was deposited in the mound sometime between 1100 and 1300 CE.

Archaeologists estimate that only 10 percent of the city has been excavated until the early 2000s.

Archaeologists estimate that the first settlements in the area date from around 5000 BC.

Archaeologists estimate that the first settlements in the area of Chalchuapa date to around 1200 BC.