Siberia's Strangest Unsolved Mystery

Summary by Krater

This video tells the story of the Khamar Daban incident in August 1993, when seven hikers from Kazakhstan undertook a mountain expedition, and only one survived.

From the video

Answers: What was the Khamar Daban incident?

• Khamar Daban incident
• mountain hiking tragedy
• Siberia 1993
• surviving a hiking disaster
• hypothermia and paradoxical undressing

What it concludes

• Six healthy individuals died very suddenly in close proximity to each other, displaying strange, unexplained symptoms in their final moments including self-harm, bleeding from the ears, eyes, or throat, and sudden debilitating pain.
• Hypothermia can explain some of the symptoms Valentina noticed, such as paradoxical undressing, where a freezing person's blood vessels constrict to save heat, but eventually fail and flood extremities with warm blood, making them feel like they are overheating.
• Another theory is that the hikers suffered from altitude sickness, which can trigger pulmonary edema, a build-up of fluid in the lungs, causing heart palpitations and bloody coughing.
• A final, speculative theory suggests the hikers were unwitting participants in a Russian weapons test involving nerve agents like Novichok, which cause disorientation, foaming at the mouth, and can be administered in aerosol form.