Four or five big boulders are about all it's going to take.

Standing in the heat, with big boulders all around him, he pushed it.

Me, I was sizing up a big boulder and getting an idea.

He lay only a few feet from the far edge of the wood, next to a big gray boulder.

Up over a big, misshapen boulder and down below another one.

We had no chance of scrambling back up the hill and across the big boulder before the dogs would be on us.

This time, he vanished into the shade of the big boulder to his right.

Where the wall had blown out was a pile of big boulders.

We honestly expected that big boulder to come rolling down after us at any minute.

There was a particularly big boulder ahead of us.