Mysteries of the Canyon

October 23, 2025
A close-up of a yellowish-orange bat mummy surrounded by white, curly, ribbon-like cave formations.
Stephen Eginoire

See what secrets lie deep within the Grand Canyon’s caves.


The Grand Canyon’s longest known cave holds many mysteries, including thousands of perfectly preserved bat species that surpass 50,000 years old — the current limit of radiocarbon dating.

Join renowned photojournalist Stephen Eginoire for an encore presentation on the mind-blowing cave formations and ancient wildlife found in the darkest depths of the canyon, live at the Museum of Northern Arizona. Stunning imagery will transport you to another world and leave you contemplating what other secrets the canyon holds.

Admission is free for members and volunteers of the Grand Canyon Trust. We also invite you to join us for drinks and conversation with Stephen prior to the presentation.

RSVP

Non-members can purchase tickets for $18 online or at the door, or they can join the Trust to receive free admission. We hope to see you there!

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A close-up of a yellowish-orange bat mummy surrounded by white, curly, ribbon-like cave formations.
Descend into the Grand Canyon’s caves with photojournalist Stephen Eginoire.