Numantia is the name of an ancient Celtiberian

Celtiberians

The Celtiberians were Celtic-speaking people of the Iberian Peninsula in the final centuries BC. The group used the Celtic Celtiberian language.Archaeologically, the Celtiberians participated in the Hallstatt culture in what is now north-central Spain...

 settlement, whose remains are located 7 km north of the city of Soria

Soria

Soria is a city in north-central Spain, the capital of the province of Soria in the autonomous community of Castile and León. , the municipality has a population of c. 39,500 inhabitants, nearly 40% of the population of the province...

, on a hill known as Cerro de la Muela in the municipality of Garray

Garray

Garray is a municipality located in the province of Soria, Castile and León, Spain.The archaeological site of Numantia is within the boundaries of Garray.-References:...

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Numantia is famous for its role in the Celtiberian Wars

Celtiberian Wars

The Celtiberian Wars or Spanish Wars were a series of three wars lasting, off and on, from 181 to 133 BC. They were fought between the advancing legions of the Roman Republic and the Celtiberian tribes of Hispania Citerior. The First Celtiberian War lasted from 181 to 179...

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In the year 153 BC Numantia experienced its first serious conflict with Rome.
After 20 years of hostilities, in the year 133 BC the Roman Senate gave Scipio Aemilianus Africanus

Scipio Aemilianus Africanus

Publius Cornelius Scipio Aemilianus Africanus Numantinus , also known as Scipio Aemilianus or Scipio Africanus the Younger, was a leading general and politician of the ancient Roman Republic...

the task of destroying Numantia.