The closure also means the end of REI's Signature Camps, including one that was planned to open this spring near Grand Canyon ...

The Grand Canyon's three Inner Corridor trails had to be shut after workers discovered dangerous chlorine gas at the Roaring ...

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Bright Angel, South Kaibab and North Kaibab trails were all closed. The gas leak was at Roaring Springs, which is the water ...

An emergency situation at the Grand Canyon forced the closure of inner corridor trails, including the Bright Angel Trail, ...

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The Grand Canyon covers 1,904 square miles in Arizona, and is one of the most famous National Parks in the U.S. Nearly 5 million visitors flock to the canyon ea ...

A chlorine gas leak in the North Rim forced Grand Canyon National Park officials to close three trail heads until further ...

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A chlorine gas leak at the Grand Canyon forced the closure of several inner corridor trails until further notice, park officials announced Wednesday evening.