SELIGMAN SIGHTSEEING TOUR FIELD GUIDE
Beneath Route 66: A 210‑foot descent into America’s largest dry caverns
A 45-minute guided visit into an underground labyrinth at Grand Canyon Caverns—this guide explains what to expect, how to prepare, and where to meet.
Beneath Route 66: A 210‑foot descent into America’s largest dry caverns.
Tucked just off historic Route 66 in Seligman, Arizona, the STANDARD Tour drops visitors 210 feet below the desert surface into the country’s largest dry caverns. Over a compact, 45‑minute guided route you’ll walk paved paths, negotiate stairs and uneven surfaces, and stand beneath chambers formed over eons—an experience that feels both intimate and elemental.
Highlights
Outing Highlights
America’s Largest Dry Caverns
The STANDARD Tour showcases a cavern system billed as the largest dry caverns in the United States—an underground world of rooms and passages carved beneath the high desert.
A 210‑Foot Drop from Pavement to Chamber
Tour participants descend roughly 210 feet from the surface, following paved walkways and stairways into steadily darker, cooler air—the physical transition is part of the appeal.
Paved Paths and Stairways
The route is on paved paths but includes uneven surfaces and inclines/declines; expect stairs and short climbs as you move through the cavern’s passages and chambers.
What the day feels like
What the STANDARD Tour Feels Like
The tour is compact and deliberate: a guided 45‑minute loop that begins at the surface, drops visitors through stairways to the cavern floor, and progresses along paved walkways through a sequence of chambers. Lighting highlights rock forms while the guide frames the geology and history, and the route’s stairs and inclines keep the experience active rather than passive.
Suitability
Who it's for
Who this tour suits — and who should think twice.
Practical planner
Details to review before reserving
The guided STANDARD Tour runs approximately 45 minutes.
For safety wear closed‑toed shoes and avoid high heels; a light sweater or long sleeves are recommended for cooler cavern air.
Meet at 115 AZ-66, Seligman, AZ 86337, USA before the tour departure.
Review cancellation policies before reserving.
Frequently asked questions
Planning Your Outing
How long is the STANDARD Tour?
The guided tour lasts about 45 minutes.
Where do I meet for the tour?
The meeting location is 115 AZ-66, Seligman, AZ 86337, USA.
Are backpacks or outside food allowed?
No—backpacks and outside food or drink are not allowed inside the caverns.
What should I wear?
Closed‑toed shoes (no high heels) are recommended; also bring a light sweater or long sleeves for the cooler underground temperatures.
Is the route suitable for people who can’t climb stairs?
The tour includes stairs, inclines and declines; it is not well suited for those unable to manage stairways or sustained walking on uneven surfaces.
What makes this cavern different from a typical roadside stop?
This is billed as America’s largest dry caverns and offers a 210‑foot descent into natural chambers—an extensive subterranean system rather than a simple roadside cave attraction.