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In the 3rd
and 4th centuries A.D. , the Roman Emperor Avrelius the Third had
built fortresses for the security of roads in Northern Bulgaria , which was
under the rule of the The
Ryahova fortress is located 3 km west to the town of
Probably the choice of that
place is taken as suitable
because of the river Yantra which runs nearby the hills . The
naturally created river ford reinforce
the defensive role of the fortification of Ryahova .
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