I recognized the hole as belonging to a wolf spider. There are about 50 species of wolf spiders indigenous to Michigan, so I can’t tell you which particular one it is.

Large wolf spiders are scary ground dwellers. Jul 6, 2020 Jul 6, 2020; 0; A wolf spider stands next to a quarter for comparison in size on the shore of Fort Peck Reservoir recently.

Saddam's Spider Hole NPR's Steve Inskeep notes an Associated Press report that U.S. Army engineers are covering the famous "spider hole" where Saddam Hussein was found hiding in December.