ID Request: Strange Ground Comb-Like Structure- Abandoned Wasp/Yellowjacket Nest

Today I noticed a bare spot amid some ivy (?) that was planted to take over the ground between the sidewalk and the house. Looking closer, I noticed a comb-like structure that I have never seen before.

Any idea what this might be? I didn't want to disturb it in case it was some type of ground hornet (which might respond aggressively) or something like a bumblebee, which have a hard enough time without me poking at their homes.

This is in Michigan.

probably an old ground nesting hornet or yellowjacket nest, uncovered after it was abandoned. if it was active, you’d know it already.

greg mosser wrote:probably an old ground nesting hornet or yellowjacket nest, uncovered after it was abandoned. if it was active, you’d know it already.

That might be it! Do you think it would be fine to dig it up? It has formed a bit of a mound, and I'd like to level it out a bit and toss some seeds there.

That looks like old comb. Bumblebees live alone so that can't be it.

In agreement that it's an old nest, we get bumblebee nests that look quite like that but I can see a bit more in the bush so I think it's rather bigger than I'm used to for them. Whatever it was you can remove it, though maybe with a long stick for the first poke just incase!