The areas of the city that were densely populated connected the two bodies of land with marble bridges. They usually followed a curved line. The strait begins at the old market called Apano Skala. It was also close to Metropolis Street and ended at the Southern Harbor. One could argue that the channel transversed what is now called Ermou Street. Over time the strait began to collect silt and earth. There was also human intervention for the protection of the Castle of Mytilene. The strait eventually filled with earth.