spoken with the National Park Service, we've spoken with the different, you know, state police, Houghton police. We even called the Coast Guard, and the Coast Guard said they're aware of it,  Evan said.

Craig's picture has been posted at every campsite on the island, and park staff is asking everyone entering or leaving Isle Royale if they have seen him.

 I know his picture's at every campsite and every area, and everybody who's entering the island is being told to look for him, and everybody who's leaving the island they ask if he's been seen,  Evan said.

Despite the uncertainty, Evan said the family is holding on to hope.

 You know, we appreciate all the support that's been coming out on social media and from our friends and family... we're keeping up hope,  Evan said.

The National Park Service said search operations on Isle Royale are ongoing.

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