Rodney Letterman (linking to posts from his websleuths thread because much of the MSM material has not been archived). This one is a bit tentative because I don't think LE/SAR has ever straight up come out and say they searched this area before.
Letterman was last seen at Devil's Den State Park in Fayetteville, Arkansas on August 28, 2017. He was hiking on the Butterfield Trail with a friend when, at about 12:00 p.m., Letterman wasn't feeling well (I believe he had high blood pressure?) and sat down to rest. He had left his blood pressure medicine in the car, so his friend went back to get it for him. When he returned, Letterman was gone.
The search included 127 workers and volunteers who searched
4000 acres (6 square miles) surrounding the Butterfield Trail.
His skeletal remains, in multiple pieces, were found February 25, 2019,
3 miles from the visitor's center on private property. Per this image used by MSM, the area his skull was found appears to also be ~3 miles from the trail head and very well might have been in the search radius.
The website
StrangeOutdoors, which IMO is 411-esque and thus skewed towards creating a good creepy story as they are subscription-based, states
"Park officials did re-evaluate search records and found the area where these remains were found was searched back in 2017. So Rodney managed to get to the spot after the searchers departed." However, because they do not cite their sources, I cannot confirm this.