Lost my link to the page..
Maybe I'm thinking of Open Street Map's website with the downloads for landclasses and height-maps to make in TerraGear?
I know they just recently did a big revision of the older scenery for the PNW, and the complexity of the landclasses, includes the checker-boarding of the forests from recent heavy logging Oregon has had for the last 10 years. And I recall it had a lot more open spaces in what is normally a horizon to horizon coniferous forests in FG.