After long preparations it took only a few seconds to drop down the entire cable roof of Hubert H. Humphrey Metrodome. This marks the end of old stadium's cover and another phase of its demolition.

On Sunday, the cables that supported Metrodome’s famous roof were severed as construction crews set off about a dozen explosive charges.

Mortenson Construction said before the blasts that the noise would have a lower decibel level than pyrotechnics used after a Vikings touchdown. Still, the Star Tribune reports the noise prompted about a half-dozen calls to police from people who wondered what was going on.

The Metrodome is being torn down gradually to make way for a new $975 million Vikings stadium. The new structure will be located partly on Metrodome's blueprint. Steel installation for the new stadium is expected to begin in August.