Arizona Trail Backpacking Passage 38, Grand Canyon Inner Gorge (Rim to Rim)
AZT Day 8
Trans-Arizona/Utah Day 15

In the land of Arizona
Through desert heat or snow
Winds a trail for folks to follow
From Utah to Old Mexico

It’s the Arizona Trail
A pathway through the great Southwest
A diverse track through wood and stone
Your spirit it will test

Oh, sure you’ll sweat and blister
You’ll feel the miles every day
You’ll shiver at the loneliness
Your feet and seat will pay

But you’ll see moonlight on the borderlands
You’ll see stars on the Mogollon
You’ll feel the warmth of winter sun
And be thrilled straight through to bone

The aches and pains will fade away
You’ll feel renewed and whole
You’ll never be the same again
With Arizona in your soul

Along the Arizona Trail
A reverence and peace you’ll know
Through deserts, canyons, and mountains
From Utah to Old Mexico
-“The Arizona Trail,” Dale R. Shewalter

North Rim-Thompson Canyon

Grabbed a few things at the general store on the North Rim of Grand Canyon today, then packed up camp. The park has a number of special sites at the campground, available first-come, first-served, to those who hike or bike into the park. I then proceed over to the Backcountry Information Center, and get put on another thruhiker’s permit for Bright Angel Campground at the bottom, near the Colorado River.

My pack weighs in at 46 pounds, not overly light but lighter than it has been. Obviously some of my efforts to cut weight before crossing the canyon paid off. After a side trip to see the aspens in Thompson Canyon, as recommended by the LE ranger that I spoke to yesterday, I head into the canyon.

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Aspens in Thompson Canyon
Grand Canyon National Park North Rim, Arizona
Aspens in Thompson Canyon
Grand Canyon National Park North Rim, Arizona
Aspens in Thompson Canyon
Grand Canyon National Park North Rim, Arizona
Aspens in Thompson Canyon
Grand Canyon National Park North Rim, Arizona

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Aspens in Thompson Canyon
Grand Canyon National Park North Rim, Arizona
Aspens in Thompson Canyon
Grand Canyon National Park North Rim, Arizona
Aspens in Thompson Canyon
Grand Canyon National Park North Rim, Arizona
Aspens in Thompson Canyon
Grand Canyon National Park North Rim, Arizona
Aspens in Thompson Canyon
Grand Canyon National Park North Rim, Arizona
Aspens in Thompson Canyon
Grand Canyon National Park North Rim, Arizona

Arizona Trail: North Kaibab Trailhead to Supai Tunnel

This is the only part of the Arizona Trail that I have solid familiarity with, having hiked from the South Rim to the North Rim and back in May. If there’s anything I know, it’s to expect the unexpected. In May I ran into rain, hail, and snow between Cottonwood and the North Rim as elevations changed. I was also delayed heading back to the South Rim the following day by several hours due to a torrential rainstorm that blew through.

Fortunately, none of that materializes today. It’s still going to be warm at the bottom, but not as warm as it would have been had I started right when my season ended, and the warmth is a welcome change from the Kaibab cold of the past few nights. The trail starts at 8297 ft of elevation and drops to the Colorado River at 2480 ft.

The route heads down the legendary North Kaibab Trail, past the Coconino Overlook, where I have a long conversation with a park PSAR volunteer hoping to do the trail themselves in the spring, to the Supai Tunnel, around which the grade peaks at 25%, one of the steepest on the entire AZT. Fortunately, I’m going down. By this point, I have descended through the Kaibab Limestone, Toroweap Formation, Coconino Sandstone, and into the Supai Group.

Backpacking view down Roaring Springs Canyon from Coconino Overlook. Komo Point at junction of Roaring Springs and Bright Angel Canyons visible at center. South Rim can be seen in right-center, with San Francisco Peaks above
Arizona Trail, Passage 38 (Grand Canyon Inner Canyon)
Grand Canyon National Park
Hiking view down Roaring Springs Canyon from Coconino Overlook. Komo Point at junction of Roaring Springs and Bright Angel Canyons visible at center.. South Rim can be seen in right-center, with San Francisco Peaks above
Arizona Trail Passage 38 (Grand Canyon Inner Canyon)
Grand Canyon National Park
North Rim layering above, seen backpacking the North Kaibab Trail. Kaibab Formation at top, sloping Toroweap, Coconino Cliffs, and sloping Hermit Shale lead down to the Supai Group
Arizona Trail, Passage 38 (Grand Canyon, Inner Canyon)
Grand Canyon National Park
Hiking view through the Supai Tunnel on the North Kaibab Trail
Arizona Trail Passage 38 (Grand Canyon Inner Canyon)
Grand Canyon National Park

Arizona Trail: Supai Tunnel to Roaring Springs

Backpacking view down Roaring Springs Canyon from the Supai Tunnel on the North Kaibab Trail.
Arizona Trail, Passage 38 (Grand Canyon, Inner Canyon)
Grand Canyon National Park
Hiking view down Roaring Springs Canyon from the Supai Tunnel on the North Kaibab Trail. Redwall Bridge visible in shade, lower right of image.
Arizona Trail, Passage 38 (Grand Canyon, Inner Canyon)
Grand Canyon National Park
Backpacking view down Roaring Springs Canyon toward Komi Point from the Supai Tunnel on the North Kaibab Trail. Redwall Bridge visible in shade, lower right of image.
Arizona Trail, Passage 38 (Grand Canyon, Inner Canyon)
Grand Canyon National Park

The trail continues to descend. It enters the Redwall Limestone and drops through a series of switchbacks to the Redwall Bridge before beginning a more gradual traverse through the layer, a stretch where the trail was literally blasted out of the cliff, almost forming a half-tunnel.

View back toward Supai Tunnel, backpacking the North Kaibab Trail descending into Roaring Springs Canyon
Arizona Trail, Passage 38 (Grand Canyon, Inner Canyon)
Grand Canyon National Park
Hiking view down Roaring Springs Canyon from north side of Redwall Bridge.
Arizona Trail, Passage 38 (Grand Canyon, Inner Canyon)
Grand Canyon National Park

The trail continues through the Muav Limestone to Roaring Springs at the border with the Bright Angel Shale, the source of all of the drinking water for Grand Canyon National Park. The water from the springs is pumped to the North Rim and flows by gravity to Indian Gardens on the South Rim before being pumped to the rim itself from there. Entering Bright Angel Canyon, it passes through a segment of trail that was literally blown out of the side of the cliff by the Civilian Conservation Corps in the 1930s, the terrain was so rugged, forming a kind of half-tunnel above the trail in the side of the cliff.

Backpacking view down Roaring Springs Canyon from Redwall Bridge
Arizona Trail, Passage 38 (Grand Canyon, Inner Canyon)
Grand Canyon National Park
Roaring Springs Canyon split by evening light, with the upper portion glowing red-gold and the lower portion in shadow.  The Redwall Bridge on the Arizona Trail (North Kaibab Trail) across the canyon drainage is visible at the bottom.
Upcanyon view of Roaring Springs Canyon, Redwall Bridge in lower center. NK Trailhead is located in pine forest on upper left.
Arizona Trail, Passage 38 (Grand Canyon, Inner Canyon)
Grand Canyon National Park
North Rim seen hiking the North Kaibab Trail in Roaring Springs Canyon
Arizona Trail, Passage 38 (Grand Canyon, Inner Canyon)
Grand Canyon National Park
View down & across Roaring Springs Canyon from backpacking on the North Kaibab Trail. Uncle Jim Point at upper left. Rim in distance is in Bright Angel Canyon.
Arizona Trail, Passage 38 (Grand Canyon, Inner Canyon)
Grand Canyon National Park
Hiking the North Kaibab Trail in Roaring Springs Canyon. This section of trail, one of the most rugged and remote on the developed Corridor between the North and South Rims, was blown out of the cliff by the CCC in the 1930s.
Arizona Trail, Passage 38 (Grand Canyon, Inner Canyon)
Grand Canyon National Park
Upcanyon backpacking view of Roaring Springs Canyon. Redwall Bridge in lower center. NK Trailhead is located in pine forest on upper left.
Arizona Trail, Passage 38 (Grand Canyon, Inner Canyon)
Grand Canyon National Park
Roaring Springs, viewed from hiking the North Kaibab Trail.
Arizona Trail, Passage 38 (Grand Canyon, Inner Canyon)
Grand Canyon National Park

For my other entries on hiking the AZT in Grand Canyon, check out the following:
Amazing, Stunning Arizona Trail: Grand Canyon North Rim-Roaring Springs – Aspen’s Tracks (aspenstracks.com)
Amazing, Spectacular Arizona Trail: Grand Canyon, Roaring Springs-Ribbon Falls – (aspenstracks.com),
https://aspenstracks.com/arizona-trail-day-8-grand-canyon-ribbon-falls-to-bright-angel-campground/
Amazing, Spectacular Arizona Trail – Bright Angel CG (Colorado River)-South Rim – (aspenstracks.com)

For the National Park Service official advice on day hiking and backpacking below the rim at Grand Canyon, including on the AZT, check out the following:
Introduction to Backcountry Hiking (nps.gov)
Day Hiking – Grand Canyon National Park (U.S. National Park Service) (nps.gov)

Passage Logistics and Ecology Information

Passage 38 (Grand Canyon Inner Canyon)
Trail SurfaceDirt singletrack
Length (Mi)21.4
SeasonFall-Spring (September-April).

No vehicular access to North Kaibab Trailhead December-April. Feet of snow above Supai Tunnel on the North Kaibab Trail in winter.
Potential Water SourcesNorth Kaibab Trail
Supai Tunnel
Roaring Springs
Manzanita Resthouse
Bright Angel Creek
Cottonwood Campground
Phantom Ranch
Bright Angel Campground
TrailheadsNorth: North Kaibab Trailhead
South: South Kaibab Trailhead (Yaki Point)
Trailhead AccessNorth: Vehicular Access (paved)
South: Foot and shuttle access
WildernessYes
Possible resupply pointsGrand Canyon North Rim
Phantom Ranch
Grand Canyon Village
ATA-Rated DifficultyStrenuous
Potential campsites (mileages S to N)Grand Canyon North Rim Campground
Cottonwood Campground
Bright Angel Campground
Indian Garden Campground (slight detour required)
Mather Campground

Notem All camping within Grand Canyon National Park must take place in designated campsites. Walk-in reservations are available for AZT thruhikers.
Ecosystems TraversedGreat Basin Subalpine Conifer Forest
Rocky Mountain Montane Conifer Forest
Great Basin Desert Scrub
Mojave Desert Scrub
Riparian
Canyon RimNear riverSonoran DesertRiparianEndemic Near-endemic
Common Trees/Shrubs* rabbitbrush
* Stansbury cliffrose
* pinyon pine
* Juniper
* Alkali goldenbush
* Chuckwalla’s delight
* longleaf brickellbush
* Mojave brickellbush
* Spearleaf brickellbush
* Red barberry
* Serviceberry
* Silktassels
* Skunkbush
* sugar sumac
* brittlebush
* odora
* slender janusia


* Redbud* Arizona turpentine bush N/A
Common herbaceous plantsN/A* Apache plume
* Rabbitfoot
* Sacred datura
* Watson’s Dutchman-pipe
* Western bernardia
* desert chicory* maidenhair fern
* Red monkeyflower
* Arizona prickle poppy
* Glow willowweed
* giant hellebore orchid
Common succulents* Banana yucca
* Barrel cactus
* claret cup hedgehog cacti
* Englemann hedgehog cactus
* Pincushion cacti
* Prickly pear cacti
* Soaptree yucca
N/AN/A* Kaibab agave* Barrel cactus
* Grand Canyon beavertail cactus
Passage 23 & 22 Ecology (source: Arizona Trail Association AZT Guide & NatureServe). Only California and Texas are more diverse ecologically than Arizona.