Found some fascinating stories about the Nahanni Valley in the Northwest Territories of Canada.
Elves from the North Pole - More than a Fairytale?
Legends of the Nahanni Valley- Northern Canada's Greatest Mysteries
A fascinating interview with cryptid hunter, Frank Graves, who was long thought to have mysteriously disappeared:
There is a nice index of the topics covered in the video:
0:00:00 - Introduction
0:00:35 - Frank Graves
0:02:06 - Ivan T. Sanderson
0:06:12 - The American Expeditionary Society
0:10:56 - Hay River
0:12:00 - Fort Simpson
0:13:49 - Nahanni Butte
0:17:50 - Nuk Luk
0:22:24 - Kraus Hot Springs
0:25:55 - The Waheela
0:35:03 - The Mounties
0:37:10 - Sasquatch
0:40:31 - Moose Riding
0:41:14 - The First Canyon
0:42:45 - The Headless Valley
0:43:43 - Wildlife
0:48:00 - Albert Faille
0:49:24 - The Mongol Caves
0:55:59 - Virginia Falls
0:57:03 - The Great Pancake-Eating Contest
1:00:38 - The Voyage
1:02:04 - The Thunderbird Expedition
1:08:05 - The Missing Thunderbird Photograph
1:13:16 - A New Cryptid?
1:16:33 - The End of an Era
There are some remarkable things about the Nahanni Valley!
Just to set some context, here's where it's located: