H arv was a clever boy who knew about trolls, and so as soon as he knew that 
they had been locked up inside the Dark Castle by their wicked stepmother, he 
told Nell that they must go out and gather all the firewood they could find. 
Rummaging in the Great Hall of the castle, he found a suit of armor holding a 
battle-axe. "I will chop down some trees with this," he said, "and you must 
go out and gather kindling."