26/03/2024
🤔 “So, you’re telling me there’s a chance?”
It might be one in a hundred or one in a million, but we do know there’s always a chance of rockfall here. After all, geologic time is now!
The same reason Bryce Canyon has the highest concentration of hoodoos in the world is also why there’s an inherent risk in hiking beneath them. This is a grand erosive spectacle--or in other words: a beautiful place to watch rocks unceasingly fall apart.
At these high elevations, temperatures fluctuate above and below freezing in a single 24-hour period about 170 days a year. This causes a freeze-thaw process where melting snow seeps its way into cracks in the rock and then freezes overnight. The expansion of ice puts tremendous pressure on the surrounding rock, often breaking it apart. Ice then melts further into cracks the next afternoon, and the cycle continues.
This time of year is well within Bryce Canyon's freeze/thaw cycle (typically November – April), so here are a few tips for enjoying a safe visit in this Geologic Work Zone:
🥾 Remember to always stay on trail, and be aware of your surroundings. Side canyons are littered with rocks, and you know they fell from somewhere.
🖐️ These hoodoos won't hold you. The limestones of Bryce Canyon are fragile and not suitable for climbing any time of year.
🙄 Observing areas where rocks have gathered along the trail may suggest an especially active geologic area. Look up, listen, and share any photos and concerns with rangers at the Visitor Center front desk.
⛔ Respect all closures. Narrow areas like the Wall Street side of Navajo Loop are closed every winter due to this heightened rockfall risk. Travelling into these areas not only puts you at risk, but also the rangers that may be called upon to rescue you.
These colder months can be some of the most breathtaking here, and that beauty can be well worth the extra preparation required. By understanding the risks, you can be better prepared to enjoy one of the most rapidly changing landscapes on Earth without injuries or unexpected changes to your vacation plans.
St Photo/Estivillml
(tz/pd)