Fearing a Killer Landslide, Squamish Builds a $115-Million Wall – The Tyee

History shows what could happen. Is this ambitious response enough? A Tyee deep dive.

In 1990, workers excavating land at Squamish’s garbage dump made a curious discovery: trees buried deep in the ground.

The dump’s operator called in geoscientists, who dug five metres and unearthed not just a few logs, but an entire forest. The trees and surrounding debris turned out to be evidence of an 800-year-old landslide that had cascaded down the slopes of Mount Garibaldi and flattened and buried the landscape. Scientists soon determined that the slide wasn’t the largest debris slide to have tumbled down the iconic mountain’s southwest flank and into the valley. And they knew then that it wouldn’t be the last.

Read More: https://thetyee.ca/News/2026/05/19/Fearing-Killer-Landslide-Squamish-Builds-Wall/