The christian symbol that Simka will likely find on Stones in Northern England is the Cross Sign because that is an important symbol of Christianity brought by the Romans.
Some group of men was sent from Rome to England to bring Christianity to the Anglo-Saxons in the 6th Century.
These people helped to establish one of medieval England's important abbeys and start the English's conversion to Christianity.
In conclusion, the christian symbol that Simka will likely find on Stones in Northern England is the Cross Sign because that is an important symbol of Christianity brought by the Romans.
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