Yosemite National Park receives millions of visitors every year, having been one of the most popular national parks in the U.S. Known for its iconic granite cliffs, Yosemite remains under close monitoring after climbers discovered an alarming fissure in its iconic cliffs, posing a serious risk to visitors.

Yosemite is prone to rockfalls , a natural and dynamic geologic process that involves the rapid downward movement of rock fragments, detaching from a steep slope, like the glacier-carved cliffs in Yosemite Valley. According to Yosemite National Park , over a thousand rockfalls have occurred in the park, and the quick-moving crack in a cliff on the western side of Royal Arches, close to the climbing route Super Slide, is a risk of rockfall.

This actively occurring crack led park off

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