Monolithos

Santorini Monolithos: the sea and wind erosion of rocks, forging deep craters, create a lunar landscape in this Santorini black sandy beach. Monolithos is a small traditional fishermen village with a quiet organised beach located south-est only 3km from Kamari and Karterados. The small harbour with fishing boats and the only two fish taverns offer an extremely high quality food at reasonable price.

source http://www.in-santorini.com/santorini-villages.html