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Rescuers Use New Tech to Save Caver Trapped Vertically in Alberta’s ‘Psych Squeeze’

The volunteer-built QDX-M radio helped rescuers communicate through rock during a 13-caver, 10-firefighter operation, Search and Rescue Alberta said.

  • On Saturday, a caver trapped in the "Psych Squeeze" at Rat's Nest Cave in Canmore, Alberta, was rescued using volunteer-built underground radio technology deployed for the first time.
  • Alberta/BC Cave Rescue developed the QDX-M radio system to overcome communication failures with traditional methods like phones or GPS, enabling signals through more than 500 metres of solid rock.
  • Hammer drills removed rock to extract the caver in a process measured in "inches per hour," with 13 cave rescuers, 10 firefighters, and two Kananaskis Mountain rescue members participating.
  • John Alexander, CEO of Search and Rescue Alberta, said the rescue "is a display of what can be achieved when multiple emergency response agencies come together in collaboration" with 1,500 volunteers.
  • Such units are not currently available commercially at an affordable cost, making volunteer design work essential for enabling reliable communications during future deep-cave rescue operations.
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Rescuers use new tech to save caver trapped vertically in Alberta's 'Psych Squeeze'

A caver has been rescued after being trapped vertically underground at the Rat's Nest Cave in Canmore, Alta., in an operation that deployed volunteer-built underground radio technology for the first time.

·Canmore, Canada
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The Toronto Star broke the news in Toronto, Canada on Friday, August 21, 2026.
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