National Geographic - Hear the Otherworldly Sounds of Skating on Thin Ice

This small lake outside Stockholm, Sweden, emits otherworldly sounds as Mårten Ajne skates over its precariously thin, black ice.

• 2018-02-12T16:44:46+00:00
• Duration: 03:07

• Stockholm
• Sweden
• video
• Ice
• black ice

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