DIY Fireplace Ideas - Outdoor Firepit On A Budget - Do It Yourself Firepit Projects and Fireplaces for Your Yard, Patio, Porch and Home. Outdoor Fire Pit Tutorials for Backyard with Easy Step by Step Tutorials - Cool DIY Projects for Men and Women http://diyjoy.com/diy-fireplace-ideas
I like that this is detached, interesting idea. Works if you've got the right grass. As much as I'm coming off of flagstone for a patio, a flagstone path to this with grass growing in the cracks would be awesome.