Continued issues with the altitude have forced Motorhead to put off another U.S. concert. One day after the band cited frontman Lemmy Kilmister's problems with thin air for cutting short a date in Salt Lake City, Motorhead has canceled a show in Denver.

Motorhead issued a statement tonight via Facebook saying "the high altitude of Salt Lake City" continues to adversely impacted their frontman – though they injected some humor into the situation.

"It's been quite a while since Lemmy was this 'high' in the US, and thus having got a burst of altitude sickness – which made it hard for him to breathe and sing properly," the band announced. "He has very reluctantly decided not perform in Denver. Lemmy is really sorry and wants to thank the fans for their support and trust. He looks forward to the next-up Texas shows ... at low elevations."

The Rocky Mountain High has affected Lemmy like the high altitude of Salt Lake City. It's been quite a while since Lemmy...

Posted by Official Motörhead on Friday, August 28, 2015

Motorhead is touring in support of their newly released 22nd studio album, Bad Magic. The project includes a notable guest turn by Queen guitarist Brian May, as well as a cover of the Rolling Stones' 1968 classic "Sympathy for the Devil."

This breathing issue is just the latest in a string of health problems for Lemmy, who suffered a hematoma in June 2013, leading to similar cancellations of tour dates. Later, fans learned that Kilmister had been dealing with undisclosed heart problems.

Motorhead's next concert is scheduled for Sept. 1 in Austin. Looking further down the road, Motorhead are set to appear as part of their annual Motorboat cruise on Sept. 28. The lineup also includes Anthrax, Corrosion of Conformity and Slayer.

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