If you've pondered a survival scenario, you've probably considered many different factors — food and water availability, weather, shelter options, escape routes, and so on. But there's one major variable that is often overlooked: elevation.

Frostbite snow cold winter mountain 10

As your elevation increases, temperature tends to drop, air becomes drier, and weather becomes more volatile. The boiling point of water also drops, so cooking food and purifying water takes longer. Lower oxygen density makes physical activity substantially more difficult, and can cause altitude sickness if you haven't acclimated. At extreme elevation, fatal pulmonary edemas and hypoxia become serious risks. Staying alive at 20,000 feet is a major challenge, even for experienced climbers.

Unless you're a SCUBA diver or work on a submarine, heading in the opposite direction isn't really a concern, but it's still interesting to examine.

This or that ocean

Sunlight only penetrates a mere 3,000 feet below the ocean's surface, and few humans have descended beyond 1,000 feet without a protective atmospheric suit or submarine. Even with a steady supply of oxygen, humans struggle to survive the crushing pressure and frigid temperature of the ocean depths. That's not to mention the total darkness, aquatic predators, and potential for decompression sickness.

The following infographic from LiveScience illustrates the landmarks of planet Earth from top to bottom. It also points out facts such as atmospheric pressure, temperature, and boiling time. Click here to download a full-size version of this infographic.

Infographic altitude depth survival ocean mountain 1Infographic altitude depth survival ocean mountain 2Infographic altitude depth survival ocean mountain 3Infographic altitude depth survival ocean mountain 4Infographic altitude depth survival ocean mountain 5Infographic altitude depth survival ocean mountain 6Infographic altitude depth survival ocean mountain 7Infographic altitude depth survival ocean mountain 8Infographic altitude depth survival ocean mountain 9Infographic altitude depth survival ocean mountain 10Infographic altitude depth survival ocean mountain 11Infographic altitude depth survival ocean mountain 12


Prepare Now:

Disclosure: These links are affiliate links. Caribou Media Group earns a commission from qualifying purchases. Thank you!

STAY SAFE: Download a Free copy of the OFFGRID Outbreak Issue

In issue 12, Offgrid Magazine took a hard look at what you should be aware of in the event of a viral outbreak. We're now offering a free digital copy of the OffGrid Outbreak issue when you subscribe to the OffGrid email newsletter. Sign up and get your free digital copy Click to Download!


No Comments