Pompeii

About 2000 years ago a volcano called Mt Vesuvius erupted covering the city of Pompeii in volcanic ash. The volcanic ash flew so far it made it to the sea covering the beach and filling in the bay.

When the ash fell it covered this dog and set hard like rock. Over time the dog rotted and left a hollow inside.

This is how the cast of the dog was made:

Step one – drill a hole through the ash to the hollow

Step two – pour liquid plaster in the hole

Step three – wait for the plaster to dry

Step four – break the ash off the cast