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A trek through the blast zone of a restless volcano raises questions about a father's legacy and a child's future.

Fifteen trails that'll take you from flaming maples to towering redwoods, with plenty of shimmering aspen in between.

What makes those golf-ball-size lumps on trees? A tiny wasp with a lot of nerve.

Follow four-legged trail blazers down paths you'll never find on a map.

Go out at night for a whole new look into wilderness.

Even though they eat boots and pack straps, there's newfound appreciation for porcupines.

The mountain lion is the only North American predator that occasionally stalks humans. Do you have anything to fear?

Big South Fork provides Utah-quality arches in Tennessee.

On their own and with help from the government, wolves are reclaiming their former range. Should you worry?

When it came to continent crossing, the noted U.S. explorers were a step behind Canada's Alexander Mackenzie. And until you hike his namesake trail, you can't truly appreciate the toughness of his journey or the magnitude of his accomplishment.

Hiking in grizzly territory requires preparation, respect, and a clear head. A little luck doesn't hurt, either.

Keep your food away from hungry bears.

In this classic story from a 1977 issue of Backpacker, Abbey describes days of solitude in Mexico.

A classic story from the winter 1975 issue of Backpacker.