The view from a cozy car on the Copper Canyon Railroad in Mexico is dazzling: mossy, emerald hills and slate-blue lakes slowly give way to red canyon walls that rise below and above the train tracks to dizzying depths and heights. Go stand between cars, where you can lean out of an open-windowed vestibule, and the experience gets even better — sweet mountain winds rushing over your face like water, the air warm and cool, fresh and dusty all at once.

But to step off the train, toward a journey deep into the wilds of canyon country, is to have the very best Copper Canyon adventure of all.

Copper Canyon — the Barranca del Cobre — is in northwestern Mexico, in the part of the Sierra Madre Occidental mountain range that lies within the state of Chihuahua. It is actually a series of canyons. The 400 miles of train tracks that follow the canyon, sometimes hugging the mountainsides, sometimes descending into deep ravines or crossing over them, was completed in 1961 and represents a marvelous engineering feat, with 39 bridges and 86 tunnels. In the last several years, ridership has boomed on the theme-park-like journey aboard the Copper Canyon Railroad, formally known as Ferrocarril Chihuahua al Pacífico and commonly called Chepe.

Most riders, many of them foreign tourists, stay on the train for a full day. They ride the most scenic stretch from El Fuerte to Creel, which takes about 12 hours, and many hop off the train for only the 15-minute stop in Divisadero Barrancas, where they can buy hand-woven baskets and freshly grilled gorditas from the colorfully clad Tarahumara Indians, or walk right up to the Urique canyon's edge to snap photos of its rolling, vertigo-inducing expanse. Some disembark for an overnight excursion along the way, usually a margarita-fueled rest at one of the few hotels on the route.

But the best way, really, to get a feel for this unique canyon region is to leave the train for several days and hike or ride down into the fascinating tropical depths below.The railroad's western terminus is near the coast of the Sea of Cortez, in the city of Los Mochis, which is served by Aeroméxico. But a better place to board the train is El Fuerte, 50 miles northeast, which is close to where the best scenery begins. It is a sleepy colonial town with cobblestone streets, a handful of accommodations and a whooshing, bass-filled river, and it sits just outside the canyon's southern edge.

It is well worth tearing yourself away from the room, though, to explore either by hiking up or down into the canyon, or by mounting a horse or burro with one of the local guides he hotel mirador provides.

We began by heading through the dusty town, past cement shacks and small houses, and then rode into the rocky, shady countryside, our mounts expertly scaling the rim of the canyon. Deciduous trees changed to twiglike sprouts as we ascended over lichen-covered boulders and along mossy dirt trails, and the air, which had been moist and cool under cover of trees, turned arid and hot after a half-hour climb.

We rode past tropical fruit trees and fat pipe-organ cactuses and had perfect views of the canyon below. Standing on a rocky ledge, we took in the terrifyingly beautiful expanse before continuing a three-hour journey to higher lookout points and along peaceful, well-trod paths that flirt with constantly changing vistas.

AEROMÉXICO flies from New York and Los Angeles to Los Mochis, where you can catch the Copper Canyon Railroad (Chepe).

Balderrama reservations office in Los Mochis, can arrange your whole package included the transfers and all transportation, hotel reservations, tours, etc. American and Continental Airlines fly to Chihuahua from New York with stops in Dallas (American) or Houston (Continental).

In El Fuerte, an excellent new place to stay is Hotel Posada del Hidalgo. (1-888-528-8401), Museum - resort hotel, with brightly tiled bathrooms, swiming pool, spa, bar and a great restaurant.

The Hotel Posada Barrancas Mirador in Areponapuchi has amazing terrace views and excellent meals included in the rate. For reservations: 1-888-528-8401 or in this website's Reservation Request Form.