The dry spell blanketing Bulgaria for the past two months has resulted in an unexpected archaeological discovery, with the remains of a 7000-year-old defensive wall emerging from the waters of the Ticha accumulation lake near the town of Shoumen in northeastern Bulgaria.
The wall is more than five meters tall, made of rocks that are being held together by clay. The wall has an arrowslit and appears to be better built than other fortifications dating back to the same period in this part of Europe, historian Stefan Chohadjiev from Veliko Turnovo University told Bulgarian National Television.
On the southern approach of the hill, the fortification is at its strongest, with three parallel lines of defence built to repel attackers. The inhabitants of the stronghold appear to have been a frequent target of attacks, this being the most likely reason why its defences have been built up, instead of featuring only the more traditional moat, according to Chohadjiev.