Santorini has a total population of around 13,000 and is widely regarded as the most spectacular of all the Greek islands (which I'd have to agree with). Its violent volcanic past is visible everywhere. The photos above are looking over a caldera at
Nea Kameni, an island of volcanic lava (more on that later). Through the centuries, volcanic eruptions have regularly changed the shape of the island. The caldera above is the result of an almighty eruption in 1650 BC (speculated to be the biggest such explosion in recorded history) - prior to that Santorini was circular and known as Strongili (the Round One). Not anymore!