I've got a section of yard with a considerable amount of landscaping rock (similar to https://texasgardenmaterials.com/product/river-rock-gravel/). It appears that many years ago someone had deliberately rocked the area as a landscaping choice. Unfortunately, the area has been neglected for many years. The rocks are embedded in the dirt. The area grows some grass, but mostly brush.
Ideally, I'd like to remove the rocks, add soil if needed, and return the area to being a lawn. I'm happy to rent equipment, but I don't even know what to look for. I could do it by hand with some kind of home-made sifter, but that sounds like doing things the hard way.