United States
The Colorado and Green Rivers fracture the Earth into a labyrinth of mesas with no bottom.
At the rim of Island in the Sky you look down, not across, at the Colorado threading a brown line through a maze of sandstone two thousand feet below. There is no soundtrack except wind, and no park in the West that makes you feel smaller.
Canyonlands is a wilderness of canyons, buttes and spires carved by the Colorado and Green Rivers, split by their confluence into districts that no road joins; driving between them takes two to six hours around the canyons the rivers cut. Island in the Sky is the accessible one, rim viewpoints a short stroll from the road; the Needles asks for boots among its striped spires and ancient granaries; and the Maze, reached by four-wheel drive, topographic map and permit, is the district rangers describe as the remotest corner of the lower forty-eight. The White Rim Road runs a hundred permit-controlled miles along a shelf in the canyon wall, three or four days by mountain bike, and in big snow years Cataract Canyon below the confluence runs some of the hardest whitewater in the West. Services are nearly nil by design: you bring everything, and that is the point.
Solo
The Maze exists for travellers who want to vanish properly: map-and-compass country where self-reliance is the entry fee and the reward.
Friends
Ride the White Rim over three shared days, trading pulls into the wind, and finish with the beer that Moab was invented to serve.
Dutch-oven beans and cornbread at a rim campsite; the park sells nothing and expects you to arrive knowing it.
The earned cold beer back in Moab, which exists in large part to feed people returning from out here.

Udzungwa Mountains National Park
Tanzania
Primates unknown to science until 1979 live in these Eastern Arc forests.

Jebel Saghro
Morocco
Black volcanic towers break a winter desert where mule trails vanish between water sources.

Mount Tambora
Indonesia
The 1815 eruption brought the Year Without a Summer; the crater is six kilometres wide.

Boundary Waters
United States
Eleven hundred lakes joined by portage trails where paddles rule and wolves still howl.

Kodiak Island
United States
The world's largest brown bears fish salmon streams on America's second-largest island.

Channel Islands
United States
Five islands, no shops, no hotels, and cat-sized foxes found nowhere else on Earth.

Katmai National Park
United States
Brown bears shoulder-deep in the rapids, snatching leaping salmon straight out of the air.