As the light changes over the calderas along the South Aegean volcanic arc the rock formations contrast and shift from hard to soft. Calderas exist throughout the solar system, their shifting movement, the observed hues and texture of the dark rock. Swimming in the warm water of the vents envelope us in the unfathomable timespans of geology.

A caldera is a volcanic feature formed by the collapse of a volcano into itself, this usually happens after an eruption triggered by the emptying of the magma chamber below. Santorini Caldera is a large, mostly submerged caldera.