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

A chlorine gas leak at Grand Canyon National Park’s main water supply has forced park officials to close all inner canyon corridor trails. Officials said the leak occurred at Roaring Springs ...

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

Roaring Springs, the afflicted area ... but the trails have been reopened to the public and deemed safe for recreation. Grand Canyon National Park is in the midst of a $208-million water system ...

All inner canyon trails at the Grand Canyon reopened after a chlorine gas leak at Roaring Springs, the national park said on Thursday afternoon. The chlorine gas leak was reported at Roaring ...

The chlorine gas leak occurred at Roaring Springs. Rob Parrish, the park’s Division Chief of Planning, Environment, and Projects, said the Grand Canyon’s current water treatment plant is there ...

They add that cylinders of chlorine gas are routinely flown into Roaring Springs for the treatment process. For updates on when the trails will reopen, visit the Grand Canyon National Park's website.