Hoover Dam explosion, fire rock tourist site, dramatic video shows ~ July 20, 2022

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Oh, dam!

A large explosion rocked the Hoover Dam during a tour of the facility early Tuesday, dramatic video shows.

A clip posted to Twitter minutes after 10 a.m. local time showed a huge plume of smoke emanating from the dam along the Colorado River on the border of Nevada and Arizona.

“Touring the #hooverdam and heard an explosion #fire,” the visitor, Kristy Hairston, tweeted.

An official giving a tour of the 726-foot concrete structure told visitors to get their cellphones and cameras out to catch footage of the blast.

“There’s just been an incident here at the dam,” the guide said of the explosion and subsequent fire. “We’re going to be leaving now so we don’t get trapped in here.”

It was not immediately clear what led to the explosion, although some on social media speculated one of the facility’s generators may have caught fire and blown up.

Firefighters from Boulder City were en route to the dam after getting an emergency call, department officials in Nevada announced.

But the blaze was put out before Boulder City firefighters got there, the department said in a subsequent tweet.