Thomas Marco Seibold, 32, from Wisconsin, was last seen September 29, 2012, at a remote fish camp in the Ambler area of Alaska. A native of Germany and an experienced survival instructor at the Teaching Drum Outdoor School, he had gone to Alaska in June 2012 intending to hike more than 25 miles to the village of Kobuk, catch a flight to Fairbanks, then return to Wisconsin by mid-November. His last known entry is a journal note dated October 7, 2012, mentioning preparations for a multi-day exploration.

Seibold had traveled up the Ambler River and stayed at a cabin roughly 30 miles north of Ambler and may have entered Gates of the Arctic National Park and Preserve. A canoe was later found on the west side of the Ambler River, and aerial searchers spotted a circle on a gravel bar that could not be tied to a distress signal. After he missed his scheduled flight, troopers began a 13-day search over about 3,500 square miles; nothing conclusive was found and the search was suspended. He was legally declared deceased in 2013, but no conclusive trace of him was ever recovered.

Are there readers who were in the Ambler area that fall who recall seeing a canoe, camp, or anyone fitting Seibold’s description?