Rockey is a rock. He is very happy.

But he wasn't always a rock...

At one time, Rockey was inside a volcano...

...a big, powerful volcano

Then the volcano exploded

Rockey was very scared

But at last he found a place to rest

And there he waited...

...For something extraordinary to happen

Eventually, he began to cool...

until he was an...

...Igneous rock!

Over time though, the wind and rain battered against him

And then he transformed into a...

...Sedimentary Rock!

But eventually...

...It was time to change again

This time he became...