Item description:

Walk up to tree trunk bridge
Cursor already on it - press X)

Use pole with trunk

Once you've crossed, you'll be in an HO scene
**View Screenshot Included For Item Locations**
Once You Pick Up ALL The Nuts And Berries....
Pick Up The Car Key From The Squirrel

(And Maybe "Run Like The Wind" IF You Didn't Get It
With The Save I Provided, And Do It In 60 Seconds)