Keep checking the CrackBerry Wallpaper pages for the wallpaper titled "GoldenNeedleHills", soon to show up in the 360x400 page, scenery section:
crackberry.com/wallpaper/by/360x400/scenery-83
I found the source RIM likely used for the wallpaper, thanks to the reverse image search site tineye.com and google images. It's a crop from the picture titled "Sunrise at Golden Needle Hills". Just a little image editing on my part et voila, a reasonable facsimile!