📍Craters of the Moon NM (Arco), Idaho

Start here to get your bearings—the smell of dry sage drifts through the cool interior while a topographic relief model lays the whole lava field out before you like a dark, frozen ocean. Rangers are generous with trail condition updates this time of year, especially about which paths still hold snowmelt or mud. Arriving right at opening means you'll have the exhibits and the staff's attention almost to yourself.

Ease into the landscape without demanding much of your legs—this seven-mile paved loop delivers maximum otherworldly drama for minimal effort. Pull over at Big Craters Pullout for a sweeping panorama, then linger at North Crater Flow overlook where the morning light rakes across intimate volcanic texture. The silence at each stop is its own kind of attraction; few places feel this untouched.

After lunch, duck into the cool shadow world of the lava tubes—a welcome contrast to the sunbaked surface above. The trail crunches underfoot through black rock before opening into cave mouths where wind whistles faintly and the smell of ancient stone hangs heavy. Bring a flashlight or headlamp; the deeper caves go properly dark, and that disorientation is part of the thrill when you're exploring solo.

Arrive by 7:30am and the trailhead is yours—just you, the ravens, and the wind rushing across open crater ridges. The cinder crunches underfoot as the trail climbs into a landscape so stripped-down it feels like walking on a different planet entirely. By 9am this trail starts seeing moderate traffic, so the early start isn't just about light—it's about having the silence to yourself.

This is the day's most intense stretch—descending into a crater bowl walled with jet-black and rust-red lava, utterly devoid of vegetation. The absolute quiet down here is disorienting in the best way, broken only by wind whistling through stone formations. Solo hikers should pace themselves; footing is uneven and there's no shade, so this is best tackled before midday heat sets in.

Save the park's signature climb for golden hour—by late afternoon the crowds have thinned and the low sun throws long shadows across the cone's black flanks. The climb itself is short but strenuous on loose pumice; at the summit, the view opens into an endless, lifeless sweep of lava broken only by distant cone silhouettes. It's a fitting, quietly triumphant close to two days spent alone with this landscape.