If you mean the book titled 'Northwoods', the short take is: maybe, but probably not for free unless one of a few special conditions applies.
A lot depends on publication date and the publisher's choices. If 'Northwoods' is
old enough to be in the public domain where you live, you'll often find volunteer-recorded versions on
LibriVox or scans and audio files on the Internet
archive. For more recent books, the most common legit free routes are library lending services like Libby/OverDrive or Hoopla (you need a library card), an occasional
Audible or publisher promotion, or the author releasing an audio version on their own website or podcast
Feed.
I usually start by searching 'Northwoods audiobook LibriVox', then check the Internet Archive and YouTube, and finally my library app. If I only find ripped uploads that look low quality or illegal, I skip them — I’d rather wait and borrow through the library. If you love the book, supporting the creator with a purchase or a library loan feels right to me.