More from the article...

...The man -- whose name remains under wraps even after several decades -- resided in the Turkish providence of Cappadocia. He's said to have been working on an interior home upgrade when he demolished the one barrier dividing his residence from that of people from as far back as the 8th or 7th centuries BCE. The hole in his wall opened up to a tunnel, which gave way to more tunnels, allowing archaeologists at the Turkish Department of Culture to inspect the newly-discovered city firsthand.

Now referred to as Derinkuyu, the city is believed to have housed early Christians who fled from the Romans, plus Muslim Arabs seeking refuge from the Arab-Byzantine wars. Compared with other hideouts, Derinkuyu offered a decent level of security: Many people didn't know about the underground labyrinth at all, and if residents were found out, they could use the city's many intricate escape routes to avoid harm. They even used stone "doors" to block passageways, sealing themselves and their families inside with select livestock and other supplies until intruders gave up and left....

@#2 ... Roadside signs along highways ...

Burma Shave....