Varna is a city in Bulgaria. The Black Sea lives here. It probably got its name from the old Turkish word Kara, which means both “black” and “north.” Because of the depth, the water in the middle of the sea does look black sometimes. Once you move out from the shores a few thousand meters, along a little shelf, the sea drops off into a fathomless abyss. It reaches the depth of around 7,300 feet at its center. It is black in another sense, too. Surrounded by countries like Bulgaria, Romania, Ukraine, Georgia, it is a sea less familiar to the West. It is, thus, the unknown sea. There’s a scale model of the entire Black Sea in a public park in Varna. You can play on it with your Bulgarian godchildren. The model is big enough that you have to use your hands to climb over the Caucus Mountains…. More…