The myth of "Venus and Adonis" is set mostly in the woods. In lots of stories, the woods are a place of freedom from the civilized world That's true of this story, for sure, because Adonis' mom, Myrrha, heads to the woods to escape from her father an the people who would judge her for her incestuous love. The woods are also often a place to have a bit of romance. (If you've read many Shakespeare comedies, like A Midsummer Night's Dream or As You Like It, you know this is true.)
However, forests are also often associated with danger. The woods are full of wild animals, as we know from stories like "Little Red Riding Hood." The story of "Venus and Adonis" is no different: vicious, wild boars roam the woods, and one kills Adonis.