36 years ago, a 16-year-old boy named Ethan Cole Larson left his family’s campsite in the Boundary Waters Canoe Area Wilderness in northern Minnesota on an early morning in August of 1987 and did not return.
His family had been camping for 3 days on a lake in the interior of the BWCA, accessible only by canoe, miles from the nearest road.
And Ethan had gotten up at 5:30 to fish from the rocky point at the edge of the campsite, which was a thing he did every morning they camped there because the walleye were most active at that hour.
His parents woke at 7:00 to find the point empty, the fishing rod propped against a birch tree, and Ethan gone.
The search that followed involved the United States Forest Service, the Cook County Sheriff’s Department, the Minnesota Department of Natural Resources, and volunteer search and rescue teams from three counties.
It lasted 8 days. The BWCA is one of the most remote wilderness areas in the continental United States, over a million acres of interconnected lakes and forest, traversable only by canoe or on foot, with no roads in its interior.
8 days of searching found no trace of Ethan. The case was classified as a missing person’s investigation with the finding of accidental death noted as a probable outcome given the terrain and the circumstances.
Ethan’s parents, Roger and Linda Larson of Duluth, never accepted the accidental death classification. They knew their son.
Ethan had been fishing those waters since he was six. He knew the point, knew the lake, knew how to handle a canoe in rough water.
He was not a child who fell off a rock at 5:30 in the morning.
The break came 36 years later in 2023 when a retired forestry worker in the small town of Ely, Minnesota came forward with something he had found in 1987 and had been carrying the knowledge of ever since, a canoe paddle found floating two lakes east of the Larson campsite with blood on the blade that he had tested informally at the time and confirmed was blood.
And then had kept the paddle in his shed for 36 years because he had not been sure what to do with it and had made the wrong decision about what not to do with it.
And had been unable to correct that decision for three and a half decades. His name was Frank Aho.
He was 69 years old. He brought the paddle to the Cook County Sheriff’s Department on a Tuesday morning in April of 2023 in the back of his truck wrapped in the same oilcloth he had wrapped it in in 1987.
He said, “I should have brought this in 36 years ago. I know that. I’m bringing it now.”
The Boundary Waters Canoe Area Wilderness was a place Ethan Larson had known since he was small and he had developed the relationship with it that forms when a person and a landscape grow up together.
The specific knowledge of which lakes hold which species at which depths in which seasons, the reading of weather from the quality of light on water, the instinctive navigation through a landscape that has no roads and requires a different kind of directional thinking.
His father, Roger, had taught him. Roger had been taught by his own father. Three generations of Larson men had paddled those lakes.
Ethan had been 16 in August of 1987, the summer between his sophomore and junior year of high school.
A young man at the specific age when independence and capability are converging in ways that are gratifying for the young man and sometimes frightening for the parents who are watching it happen.
He had gotten up at 5:30, not because anyone told him to, but because he had decided the walleye were worth the early hour, which was the kind of independent decision that his parents had found both pleasing and in retrospect devastating.
Roger and Linda Larson had returned to the same lake in the BWCA every August for 11 years after Ethan disappeared.
Camping at the same campsite, sitting at the same rocky point in the early morning hours, maintaining the specific ritual of presence that some parents of missing children develop as a way of staying physically connected to the last known location.
They had stopped in 1998 when Roger’s health made the canoe portages too difficult and had not returned.
They were both in their late 70s in 2023 when Frank Aho’s paddle delivered what 36 years of searching had not.
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Now, let’s get back to Ethan. The DNA recovered from the blood on the paddle blade in 2023 was compared to a reference sample from Roger Larson, confirming it as Ethan’s blood.
The paddle itself was not a Larson family paddle. It was a different make and color than the paddles documented in the family’s 1987 gear inventory, which the Forest Service had photographed as part of the original search documentation.
A second DNA profile was recovered from the grip of the paddle, from skin cells deposited by whoever had last held it in a situation energetic enough to leave biological material on the handle.
The second profile went into CODIS and returned a match in 8 days. The match was to a man named Dennis Roy Koop 68 years old of Ely, Minnesota.
Dennis Koop had been in the BWCA in August of 1987. His entry permit, part of the mandatory permit system the BWCA had required since 1978, documented his presence on the same interior lake system during the same week as the Larson family.
His 1994 conviction for aggravated assault in St. Louis County had placed his DNA in the database.
He was arrested at his home in Ely on June 12th, 2023. He has entered a not guilty plea.
His trial was pending. Frank Aho appeared at the Cook County Sheriff’s Department press statement in July of 2023.
He was not required to be there. He came because he said he owed it to the family to be visible about what he had done in 1987, which was to find evidence and make the wrong choice about it and live with that choice for 36 years.
He said, “I don’t expect forgiveness. I’m not asking for it. I just needed to finally put the paddle where it belonged.”
Roger Larson was in the room. He looked at Frank Aho for a long time.
He did not say anything to him. He did not have to. The paddle was where it belonged.
Ethan’s blood had found its way to the laboratory, and the laboratory had found Dennis Kope.
Frank Aho had made the wrong decision in 1987 and had made the right one in 2023.
None of this gave Roger Larson his son back. But the question he had been asking for 36 years had finally received the answer it deserved.
The BWCA permit system, the mandatory entry permit that had been required since 1978 for everyone entering the wilderness area, had created an inadvertent archive of human presence in one of the most remote wilderness areas in the continental United States.
Every person who had legally entered the BWCA since 1978 had been recorded, name, entry point, destination lake, plan duration.
Dennis Kope’s permit from August of 1987 documented his presence on the lake system overlapping with the Larson family’s campsite.
It had been there in the Forest Service archive for 36 years. When Cook County investigators requested the relevant permit records in the spring of 2023, the Forest Service had digitized its permit archive in 2019 as part of a broader modernization effort.
The records for August 1987 were available within a day of the request. Dennis Kope’s entry was on the same lake system, overlapping dates, the kind of geographic and temporal proximity that the original 1987 search had not generated a reason to examine.
Because at that time the death had been classified as probable accident and the permit records had not been pulled.
The convergence of Frank Aho’s paddle, the preserved DNA, the permit records, and the CODIS match had produced the answer in approximately 11 weeks from the day Frank walked into the sheriff’s department with the oilcloth package.
11 weeks versus 36 years. The difference was not the information. The information had been available in various forms since 1987.
The difference was the decision Frank Aho made on a Tuesday morning in the spring of 2023 when he put the paddle in his truck.
Linda Larson, when asked by a journalist what she wanted to say to Frank Aho, thought for a moment.
Then she said, “I don’t have anything I want to say to him. I have something I want to say to Ethan.
I’ve had 36 years of things I wanted to say to Ethan. Frank Aho is not the story I’m focused on right now.”
She was right. The story was Ethan. The walleye. The 5:30 morning on the rocky point.
The fishing rod propped against the birch tree. The lake that had held his story since August of 1987, and now, finally, did not have to hold it alone.
Ethan Cole Larson was 16 years old. He got up before dawn to fish because the lake rewarded the people who came to it at the right time.
He knew that lake. He had been learning it since he was 6 years old.
He was in the middle of the specific, irreplaceable education that comes from knowing a wild place across multiple years of a life that is still growing into what it will become.
And he deserved every year of that education and every year of the life that comes after it.
Ethan Cole Larson was 16 years old. He got up at 5:30 to fish because the walleye were most active at that hour.
He had been learning those lakes since he was six. He propped his rod against a birch tree and the morning took him and the morning kept him for 36 years.
And then a retired forestry worker brought a paddle out of his shed and the morning finally had to let him go.
Frank Aho had been 22 years old in August of 1987 working his first season as a forestry worker for the US Forest Service in the BWCA.
He had been on a solo patrol by canoe. The Forest Service sent patrol workers through the interior lakes to monitor campsite conditions and collect garbage.
When he had found the paddle floating in a channel between two lakes on August 23rd, 1987, eight days after the Larson search had been suspended, he had recognized the blood on the blade as blood because he had hunted and worked outdoors his whole life and he knew what blood on a flat surface looked like.
He had pulled the paddle from the water, wrapped it in the oilcloth he used to wrap tools, and made the wrong decision.
The wrong decision was this. He had not reported it because he was 22 years old and he had been afraid that reporting it would implicate him in whatever it was evidence of.
And he had not been able to think clearly about the situation in the moment he was standing in the channel with the paddle in his hands.
And he had put it in the oilcloth and put it in his pack and taken it home at the end of the season and put it in the shed.
And then every year that passed made the decision harder to correct because every year that passed added another year’s worth of not having said anything.
And the cost of correcting the decision grew with each year while the urgency of correcting it somehow did not grow at the same rate.
He had thought about the Larson family across those years. He had thought about them more in the years after the internet made it easy to find news archives.
When he had been able to read the original 1987 news coverage of the search and see the photographs of Roger and Linda Larson and understand with the specific clarity of seeing faces attached to the thing he had been carrying.
What his decision had cost them. He had thought about going to the sheriff’s department in 1999 when the family appeared in a retrospective article in a Duluth newspaper.
He had thought about it in 2015 when he retired and no longer had the structure of his working life to organize around.
He had thought about it every summer when August came around and he was in the right age to think about the things a man wants to resolve before he runs out of years to resolve them.
In the spring of 2023, he was 69 years old and in good health and there was no specific deadline except the general one that applies to everyone above a certain age and he had decided that the general deadline was sufficient.
He loaded the paddle into the back of his truck on a Tuesday morning. He drove to the Cook County Sheriff’s Department.
He walked in and asked to speak to someone about a cold case. He unwrapped the paddle.
He told them what he had found in 1987. He told them where he had found it.
He told them he was sorry it had taken 36 years. The Cook County detective who received his statement, a woman named Ingrid Halverson, who had worked cold cases for eight years, said in a later interview that she had been in the job long enough not to be surprised by much.
But that Frank Aho walking in with a canoe paddle and oilcloth from 1987 had been genuinely surprising.
She had processed the paddle immediately, called the forensic laboratory in Duluth, and had the paddle in the hands of an Edina technician by the following morning.
The process from paddle to arrest had taken less than 3 months. Roger and Linda Larson were still in Duluth in 2023, both in their late 70s, both in reasonable health.
Roger had taken up woodworking in his retirement, building furniture, building frames, keeping his hands occupied with wood in the way that some people who have spent significant time in forested places find particular comfort in working with what the forest produces.
He had built a small shelf that sat in the living room of their Duluth home, on which Linda had placed a photograph of Ethan, the last one, taken on the first day of the camping trip in August of 1987.
Ethan at the bow of the canoe with a paddle in his hands, squinting into the morning sun, already thinking about the walleye.
When investigators called in June of 2023 with the Edina results and the name, Roger had been in his workshop.
Linda had called him in. She had said, “Come in. They have something to tell us.”
He had come in with sawdust on his hands. He had sat at the kitchen table and listened.
When the detective finished, Roger looked at his hands for a moment. Then he looked up and said, “Can you tell me who he was?”
The detective told him Dennis Coppe’s name, his age, his background. Roger said, “He was in our lake.
He was in our lake that week.” Linda put her hand over Roger’s. They sat like that for a long time.
Then Rogers said, “Thank you for calling.” The specific character of the BWCA as an investigation environment had shaped everything about the original 1987 search and its failures.
In a wilderness area of over a million acres accessible only by water with no roads and no cell service and a landscape that absorbed human presence without leaving a permanent trace.
In that environment, a crime could disappear as completely as the person it was committed against.
The 1987 search teams had been dealing with 8 days of August weather. Water that had already carried whatever forensic evidence existed away from the scene by the time it was recognized as a scene.
And a physical landscape that offered almost nowhere to anchor an investigation when there was no body and no weapon and no witness and no confirmed crime.
Frank Au Hoe floating in a channel 20 miles from the search perimeter had found the paddle.
He had recognized the blood. He had been 22 years old and afraid and he had made the wrong decision.
And then he had been 23 and the wrong decision was already a year old and the repair was getting harder.
And so on in the way it goes. He was 69 in 2023 and the decision was 36 years old and harder than it had ever been to correct but he corrected it.
Roger Larson died in January of 2024 6 months after the arrest having lived long enough to know Dennis Kahlpe’s name and to know that the question he had been asking for 36 years had an answer.
He died in Duluth in the house where he and Linda had lived since before Ethan was born in the same house where he had told Ethan when Ethan was six how to read the morning light on a lake surface for what it said about the fish below.
Linda was with him. She said he had been calmer in his last months than he had been in 36 years.
She said she thought he had been waiting without knowing he was waiting for exactly the thing that had come.
Before you go, should Frank Aho face any legal consequence for withholding evidence for 36 years given that he ultimately came forward voluntarily and without prompting?
What does the Baboquivari permit system, which documented Kope’s presence in the same area, tell us about the importance of institutional record keeping in wilderness crime investigations?
And what would you say to Frank Aho? Justice found Ethan Cole Larson after 36 years.
Found him through a canoe paddle kept in a shed in oilcloth for three and a half decades and a retired forestry worker who finally decided the wrong decision needed to be corrected.
Stories like Ethan’s are why this channel exists. Subscribe if you believe that evidence is patient enough to wait for the right moment.
More cases are in the description. Thank you for watching.
