I’m sorry, but it seems like there might be a misunderstanding in your question. “Natuurgebied dat zwanger is van Hella Haasse” does not make sense in Dutch, and it is unclear what you are referring to.
If you are asking about a specific nature reserve or area that is somehow related to the Dutch author Hella Haasse, I am not familiar with such a place. However, Hella Haasse was a renowned writer known for her novels and essays that often explored themes of cultural identity, colonialism, and history.
If you could provide more context or clarify your question, I would be happy to help you write an article about the topic.