<description>Transcript -- The beautiful Greek Island of Santorini, the site of one of the largest volcanic eruptions known to humanity. Dr Steve Blake looks at the structures of the island's volcanic rocks.</description>

Transcript -- The beautiful Greek Island of Santorini, the site of one of the largest volcanic eruptions known to humanity. Dr Steve Blake looks at the structures of the island's volcanic rocks.

The beautiful Greek Island of Santorini, the site of one of the largest volcanic eruptions known to humanity. Dr Steve Blake looks at the structures of the island's volcanic rocks.

Transcript -- Welcome to Santorini

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