Puzzletober 2024: Jumbo

Over half of this island is taken up by a large but rather homogenous dark oak forest. The trees are twice as thick as I was expecting. Due to this, I'm not entirely confident I visited the entirety of this area, but I did manage to traverse it to the next section.

Rules: Solve as a Heyawake, except by shading 2x2 squares instead of 1x1 squares.

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