ExileFan

If it helps, http://homebrewery.naturalcrit.com/ is an amazing online tool to make your own D&D style sourcebooks. I've been using it for my own home-brew D&D campaign. I know it's not exactly what you were looking for, but it may help you keep things organized and looking professional, which is pretty helpful for me, at least. Good luck!

Yes. You need Lvl 3 Move Mountains and Dispel Barrier. Use Move Mountain to open the way, use it again to break up the rocks deeper in the tunnel, and then use Dispel Barrier to get to your prize, one for each of your party members.