
Resources
Outdoor Skills
106 bite-size wilderness tutorials — the kind of things you want in your head before you need them. Each skill is one screen: three to six steps, a tip, and any real warnings.
9 skills

Ice & Cold
5 minTell if ice is safe to cross
Color, thickness, and history — check all three before you step out.
- Clear blue or black ice is the strongest. White or opaque ice is half as strong. Grey ice is unsafe — leave it alone.
- Thickness rules of thumb on clear ice: 4 in / 10 cm to walk, 5-7 in / 12-18 cm for a snowmobile, 12+ in / 30+ cm for a light truck.
- Drill or chop test holes every 50 ft on unknown ice and measure — don't guess.
- Skip inlets, outlets, springs, currents, and any area with cracks radiating from a point.
- Avoid ice near docks and pilings; dark objects absorb heat and thin the ice around them.
Warning: No ice is guaranteed safe. If you break through, kick horizontally, get your arms flat on solid ice, and roll — don't try to climb.
Jason Mitchell — Ice Safety Checklist

Ice & Cold
5 minPrevent frostbite on hands
Once your fingers stop hurting in the cold, you have about 20 minutes.
- Layer: thin liner glove for dexterity, insulated shell for warmth. Never take both off at once.
- Keep hands moving. Fists, windmilling arms, wiggle fingers inside the glove.
- Never handle cold metal or fuel with bare skin below freezing — contact frostbite is instant.
- If fingers go numb, warm them under armpits or against a companion's stomach until sensation returns.
- Add a hat — vasoconstriction to the hands worsens fast when the head is cold.
Warning: Do not rub frozen tissue with snow or hold near a fire. Warm slowly with body heat or 100-105 °F water.
Dr. Ebraheim — Frostbite Prevention

Ice & Cold
30 minWarm a hypothermic person in the field
Get them dry, insulated, and out of the wind before you do anything else.
- Move them out of wind and off cold ground onto a pad, pack, or bough bed.
- Cut off wet clothing and dry the skin. Wet cotton pulls heat 25x faster than dry.
- Wrap in insulation: sleeping bag, spare clothes, tarp burrito over the top.
- Add heat sources at the neck, armpits, and groin — hot water bottles wrapped in a shirt work well.
- Give warm sugary drinks only if fully alert. No alcohol.
Warning: A severely hypothermic person may seem drunk or drowsy. Handle gently — rough movement can trigger cardiac arrest.
ProCPR — Cold-Related Emergencies

Ice & Cold
5 minUse a vapor barrier liner in extreme cold
In deep cold, moisture from your body destroys insulation. A vapor barrier keeps sweat out of your down or synthetic layer.
- Choose a non-breathable liner — trash-bag plastic, coated nylon, or a purpose-built VBL sock or shirt.
- Wear the liner directly against skin or over a thin base layer, and put your insulation over the liner.
- Dress cool on the move — the liner traps moisture, so you'll feel damp inside but your insulation stays dry.
- At camp, remove the liner and dry your base layer against your body inside your sleeping bag.
- Use only when temperatures stay below about -15°F (-26°C). Above that, sweat management outweighs insulation protection.
Warning: Vapor barriers can macerate skin during heavy exertion. Watch for hot spots and stop to dry if any skin surface feels sodden.

Ice & Cold
15 minInsulate under your body, not just over
The ground pulls heat out of you faster than cold air. Two-thirds of your insulation should be underneath.
- Never sleep directly on cold ground, snow, or bare rock — you will lose heat you cannot replace.
- Build a raised bed of dry debris at least a hand-span thick — dry conifer boughs, dead leaves, or grass — and compress it slightly under your weight.
- Add a second layer of finer, softer material on top for comfort.
- If you have a foam pad, keep it as your closest layer to the ground; put a sleeping bag or emergency blanket on top of the pad, not under it.
- Rebuild loft each night — compressed debris insulates far less than fresh, lofted debris.
Tip: Test the bed by lying on it for 5 minutes before dark. If your back feels cold, add another 4 inches of debris before you commit to sleeping.

Ice & Cold
5 minRecognize the signs of hypothermia in a companion
Early hypothermia is treatable in the field. Late-stage hypothermia is a medical emergency — knowing the difference saves lives.
- Mild (95–90°F core): shivering, clumsy hands, slow decision-making, sometimes 'the umbles' — stumbles, mumbles, fumbles, grumbles.
- Moderate (90–82°F core): shivering may stop, confusion increases, coordination collapses, speech slurs.
- Severe (below 82°F core): no shivering, unresponsive or unconscious, weak pulse, very slow breathing.
- For mild: stop, insulate, add calories and warm sweet drinks, get moving once rewarmed.
- For moderate or severe: treat as a medical emergency, handle very gently, insulate against further heat loss, and evacuate. Rough handling can trigger cardiac arrest.
Warning: Never give alcohol to a hypothermic person. Never rub or immerse severely hypothermic patients in hot water — passive rewarming only until you reach medical care.

Ice & Cold
10 minPrevent trench foot and non-freezing cold injuries
Wet feet in above-freezing cold cause tissue damage as serious as frostbite — and it happens without you noticing.
- Change into dry socks at least twice a day whenever conditions are cold and wet.
- Dry wet socks against your body inside your shirt or sleeping bag; never leave feet in wet socks overnight.
- Wiggle toes and pump feet every time you sit down for more than a few minutes.
- Air your feet completely at least once a day — off, dry, and warmed for 10 minutes before re-socking.
- Watch for early signs: numb, pale, cold feet that don't rewarm quickly. Stop and warm them the moment you notice.
Warning: Once tissue is damaged, symptoms can last months and lead to permanent nerve injury. Prevention is the entire treatment.

Ice & Cold
60 minBuild a Mors Kochanski super shelter
A super shelter pairs a reflective front wall with a clear plastic cover to create a warm microclimate in deep cold.
- Build a lean-to frame with the open side facing a fire reflector wall.
- Hang a space blanket or reflective tarp on the inside back wall.
- Drape clear plastic sheeting across the open front, leaving a small gap at the bottom for air and a vent at the top.
- Build a long-log fire a body-length away on the other side of the reflector.
- The plastic traps radiant heat while the reflector bounces it back toward you.
Warning: Ventilation is essential. A fully sealed shelter can overheat or build up dangerous CO levels from a fire.
Mors Kochanski — The Super Shelter

Ice & Cold
10 minSurvive cold-water immersion
Cold water kills through cold shock, cold incapacitation, and hypothermia — in that order. Knowing the sequence keeps you alive.
- Control your breathing for the first minute — cold shock triggers gasping and hyperventilation.
- Keep your head above water and avoid swimming hard; cold incapacitation can rob your strength in minutes.
- If you fell through ice, kick horizontally and pull yourself onto solid ice, then roll away from the hole.
- Assume the HELP position (Heat Escape Lessening Posture): cross arms over chest and draw knees up to reduce heat loss.
- If you're with others, huddle together to share body heat while waiting for rescue.
Warning: Alcohol speeds heat loss and impairs judgment. Never drink to 'warm up' in a cold-water emergency.
NASBLA — Cold Water Boot Camp
Educational reference only. Wilderness conditions change fast — practice in low-stakes settings, take a certified wilderness first-aid course, and confirm regional regulations (fire, fishing, foraging, snaring) before you rely on any of these skills in the field.

