What to plant over Sewer Output?

My home has a large sewer output pipe that spans across my entire front yard diagonally. When we moved in a year ago, I realize that there was a sizable dip where the pipe was buried. Over the past year, I’ve been getting free woodchips and filling in that dip. It spans close to half an acre. When the wood chips go down a little bit, I just add another layer since always have a pile at the ready. The sewer output pipe is about a foot beneath the ground. Maybe a bit deeper in some spots, but not more than an inch or so. It’s been somewhat maddening to deal with because it covers so much of my yard and influences where I can plant things.

One option I considered was to just keep adding wood chips and plant lots of wine cap mushrooms. But it’s going to be more than I could possibly eat and the area also receives a fair amount of sun.

Is there anything else I can do with this area?

I of course, don’t need to keep adding wood chips to it. But they’re easy to come by.

Edit: I also would love something that require minimal maintenance from year to year.