On a scorching day in June 2021, a massive slab of granite broke away from the Stawamus Chief in Squamish, crashing into the forest below. The event occurred during a record-setting heat dome, with temperatures soaring above 40°C. While no one was injured, the dramatic rockfall forced park closures and sparked conversations about how to help visitors understand the ever-changing nature of BC’s landscapes.

Extreme heat likely caused the granite to expand and fracture—a striking reminder that the places we love to explore are dynamic, sometimes unpredictable, and impacted by our changing climate.
Now, a new set of tools is helping visitors to the Chief better understand this reality and plan accordingly. A series of Discover Trail signs, installed in partnership by BC Parks and BC Parks Foundation, invites people to explore how weather, geology, and human activity all shape this iconic mountain—and how we can all recreate more safely and responsibly.
