"Impressive and fascinating evidence of the battlefield and the breaching of the Third Wall that surrounded Jerusalem at the end of the Second Temple period was exposed in recent months in the Russian Compound in the city center." Source: Archaeology News Network.
According to the Daily Mail, "[a]rchaeologists have discovered the remains of an ancient tower thought to have once stood atop Jerusalem’s fabled 'Third Wall,' which was breached during the Roman emperor Titus’ siege of the city 2,000 years ago."
"The grisly battle ultimately led to the conquest of Jerusalem and the destruction of the Second Temple, and researchers have long debated the details of the city’s boundaries on the eve of the onslaught in 70 AD." (Daily Mail)