In some parts the evidence of volcanic activity is still pretty obvious. Just look at the terraces in this shot.

Santorini is just part of the big volcanic crater. On the far left in the pic you see Aspronisi, in the back is Therasia and in the centre the two little volcanos. The biggest of the two is still active.

The sunlight makes it hard to capture the blackness of the lava stones on the volcano, it came out rather well in this shot. Water, sky and lava!

Close-up shots of some volcanic rocks. These fellows were thrown in the air for a good 200m when the volcano last erupted ('50).

Good pic demonstrating the different kinds of ground found on the volcano. You've got grey, white, red and black all lined up. Behind it you see the centre of Santorini.

Most of the island is covered with pumice. This is the lightest stone part of the eruption and reaches the furthest. It stays in the air the longest and so it covers the all the rest.

In inside of the Santorini crater is pretty interesting as it runs up to 300 high and demonstrates all ground layers in the earth. Or you get little gems like these.

Santorini has no fresh water of its own and no trees of its own. You can find some trees living off salt water on the edges of the island, besides that the only trees can be found in towns. This one grows red pepper balls. Never knew these things grew on trees in the first place.

Everywhere you go inside the caldera you look up against these stone walls. Santorini looks pretty rough from inside the crater but once on the flanks of the volcano it's actually pretty flat.

First 5 days where clear as can be (literally no clouds at all). The last 2 days mist started pouring in from the sea. An impressive sight.

Clouds come in from the north and get caught in the caldera. The hit the crater wall and stay there for a while until they get high enough to pour over the island.

The mist is pretty cool if you're on the higher grounds, but in the south it spills over the island pretty quickly. This is the result.

A good shot from the clouds banging against the crater wall. You really feel like you're above the clouds (which you are of course) at only ~250m high.

Right before the sun starts setting the sea turns silver, capturing Aspronisi (only just a rock) in its glow.

It's hard to capture a picture of the caldera without any boats. There are volcano cruises all day long and cruise ships pour in every day.