Zion Grotto Canyon permit
Technical canyoneering permit for Grotto Canyon in Zion National Park....

Technical canyoneering permit for Great White Sewer in Zion National Park.
“Descend a drainage that cuts through the white Navajo sandstone near the Great White Throne, where the rock changes color as you drop.”
Zion does not accept advance reservations for this canyon. NPS: "If the canyon you want a permit reservation for is not listed in this menu then advance reservations are not accepted for that canyon. Instead, you must obtain your permit in person." There is no online inventory to watch.
Official permit pagePlanning another trip? See the permits we watch.
Zion does not accept advance reservations for this canyon. NPS: "If the canyon you want a permit reservation for is not listed in this menu then advance reservations are not accepted for that canyon. Instead, you must obtain your permit in person." There is no online inventory to watch.
Official permit pagePlanning another trip? See the permits we watch.
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No permit needed to start
Zion does not accept advance reservations for this canyon. NPS: "If the canyon you want a permit reservation for is not listed in this menu then advance reservations are not accepted for that canyon. Instead, you must obtain your permit in person." There is no online inventory to watch.
Official permit page →Spring and fall. Summer is hot.
Zion does not accept advance reservations for this canyon. NPS: "If the canyon you want a permit reservation for is not listed in this menu then advance reservations are not accepted for that canyon. Instead, you must obtain your permit in person." There is no online inventory to watch.
Fees, hours and closures change. Confirm the current process at National Park Service before your trip.
Office hours move, ground closes, and popular trailheads get busy. Know an alternative route or date before you drive out.
Fitness and endurance required
Climbing, scrambling, or specialized skills
Steep dropoffs and fall potential
Route finding and trail clarity
Difficulty of bailing out mid-route
Intermediate canyoneers seeking less-traveled routes.
5-10 canyons.
Beginners.
Great White Sewer cuts through white Navajo sandstone near the Great White Throne. Technical canyon with varied terrain and unique geological context.
Great White Sewer offers proximity to Zion's most iconic feature. The route passes through the same white sandstone that forms the Great White Throne, giving unique geological perspective.
Required and recommended gear for Great White Sewer
Trailhead transportation options
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Full interactive trail profile with key landmarks.
Emergency contacts, ranger station locations, and satellite communicator tips for Great White Sewer.
Bear canister requirements, approved container lists, and rental locations for this permit.
Great White Sewer is not sold online. Zion does not accept advance reservations for this canyon. NPS: "If the canyon you want a permit reservation for is not listed in this menu then advance reservations are not accepted for that canyon. Instead, you must obtain your permit in person." There is no online inventory to watch. PermitSnag does not send alerts for it — check the official permit page for the current process.
Check with the managing agency for current season dates. Weekdays generally have better availability than weekends.
This permit has a demand score of 6/10, making it moderately competitive.
On this permit there is no cancellation queue and no alert to set, because nothing is re-released onto a calendar we could watch. Bring backup dates, and check the official permit page for the current process and any closures.
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