The thin air on a high summit is the single thing most likely to turn a great day into a dangerous one — and fitness won't save you from it. This Field Skills episode is the survival companion to the Great Basin trilogy, built for anyone eyeing Wheeler Peak or any climb above 10,000 feet.

Host Shawn Spainhour, a former Army officer, breaks down what altitude actually does to your body and why a marathon runner can fall apart while someone in cargo shorts cruises past. You'll learn the simple physics of why the air isn't thin — the push is — why acclimatization is genetic and can't be trained, and how to recognize and respond to AMS, HACE, and HAPE before they become emergencies. Then the rules that get you home: climb high and sleep low, hydrate ahead of thirst, skip the alcohol, set a turnaround time in the parking lot, beat summit fever, and read your body (and your partners) every step of the way.

This is a Wildlands Field Skills episode — the survival curriculum that runs between the park series.

Wildlands — know the land before you reach it.

Where to actually sleep at Great Basin National Park — the park with no lodge, no hotel inside the gates, and one of the darkest night skies in the country. This is the practical close-out to the Great Basin trilogy: the campgrounds, the tiny gateway town of Baker, Nevada, and what to do when everything fills up.

Host Shawn Spainhour, a former Army officer, walks you up the mountain campground by campground — from year-round Lower Lehman Creek, to the all-purpose Upper Lehman basecamp, to quiet Baker Creek and primitive Grey Cliffs, to the crown-jewel Wheeler Peak Campground at nearly 10,000 feet (and the honest cold-and-altitude warnings that come with it). Plus how Recreation.gov reservations work, the Stargazer Inn and other Baker beds, the Ely fallback an hour out, and a simple way to choose the right spot for the summit, the cave, or pure solitude.

This is Part 3 of the Wildlands Great Basin series. Part 1 covers the deep history; Part 2 covers planning your visit.

Wildlands — know the land before you reach it.

Everything you need to actually visit Great Basin National Park — one of the most remote and least-crowded parks in the country. This is the practical guide: how to get to Baker, Nevada off "the Loneliest Road in America," how to book a Lehman Caves tour before it sells out, and how to stand on top of 13,000-foot Wheeler Peak without getting hurt.

Host Shawn Spainhour, a former Army officer, walks you through the whole trip: why this park has no entrance fee, the Wheeler Peak Scenic Drive through five life zones, the cave tour options and the white-nose syndrome rule that catches people off guard, the Bristlecone and Glacier trails, and the three rules for the summit — start early, respect the altitude, and turn around when the plan says to. Plus why Great Basin is a certified Dark Sky Park with one of the blackest night skies left in America.

This is Part 2 of the Wildlands Great Basin series. Part 1 covers the deep history; Part 3 covers where to stay.

Wildlands — know the land before you reach it.