SFG raised beds directly on course gravel?
Newbie with a question -- The site we've chosen four our first SFG (actually the ONLY suitable spot on our property) is then edge of a section of course gravel. I've dug down a bit, hoping there was soil just a few inches below, but the gravel seems to extend at least 8+ inches down. So what issues would I face if I were to just construct raised beds directly on the gravel? I've searched a bit on the web and couldn't really find a yay/nay on doing this. I guess I'm just trying to avoid the laborious work of digging up (and then finding a place to dump) all the extra gravel. Would also need lots and lots of fill soil to fill the hole too. Any suggestions?