What can I do with this area of my courtyard?
I purchased a large gas fire pit to place in an area in my courtyard that had housed a very large planter. I plan to put Adirondack chairs around the fire pit and put various plants around the courtyard. However, when I removed the plantar, I discovered that underneath the plantar was a shallow hole with some bricks and dirt. The rest of the courtyard has some kind of aggregate, which would be cost-prohibitive to remove. I don't want to plant anything there and I don't want to put the fire pit on dirt. What can I put in the hole? Cement? River rocks? Bricks?