We have a average rectangular back yard with a 10 to 12 foot high burm at the back of the long end of it. There are 15 - 20' tall pine trees planted on the top of it to hide a electrical substation that is directly behind it. The decent of the burm into the yard is very steep and not safe to be cutting grass on the way it is. I need help to know what I might even do with this area. I had considered making some flat beds to put flowers or a small garden in, but the length of it is pretty long and I want to break that up some how. Also, I would like to keep the tree area accessable for my children to play up there. Any ideas.