It is here that very recently the oldest rocks on earth have been found.

The central area of the forest has older rocks still.

"No fun for you, looking at a lot of old rocks and things."

It was probably just a big old rock, which had broken off a moon or a planet.

This is also where the region's oldest rock - perhaps two billion years old - has been found.

The oldest dated rocks are said to be about 23,000 years old.

This song is over 50 years old and still rocks!

At 100 million years old, these are the oldest rocks in the county.

Hunkered down among those big old rocks, I gave study to the problem.

"What have they got that can put a dent in the old rock?"