A mysterious seismic signal puzzled seismologists worldwide, leading to a collaborative investigation that revealed a massive tsunami in Greenland.

The event was triggered by a melting glacier, which caused a landslide into Dicksonfjorden, creating a standing wave that resonated for nine days.

This unusual phenomenon, described as the Earth "ringing like a bell," was linked to climate change, as the retreating ice no longer stabilized the mountainside.

The incident highlights the potential for more such events as global warming continues to destabilize icy regions.

Although no people were nearby, the area is a route for cruise ships, prompting calls for increased monitoring in seemingly safe zones.