Home page navigation and subnavigation items are likely to be: Discover HOP (Trails, Activities, Communities, Interactive Map, Just Visiting), Upcoming Events (Calendar), Resources, About Us (Our Work, Partners), Latest News.
"Contact Us" (with link to feedback form) and "Support Us" (with link to donate) could be menu items are integrated separately into the interface.
The page should most importantly direct users to find and learn about trails and activities, especially by using the interactive map. We want people to discover and explore. Embedding the interactive map on the home page might work.
The home page should have a great banner image (possibly rotating). Images can be found in this Dropbox folder:
It would also be good for the home page to have some dynamic content pulled from other parts of the site. For instance, a subset of upcoming events, weather report (in footer), partner logos, featured images.