Molly Burke was walking through a park with no cane and no guide dog when she stopped, reached out, and put her hand on a tree. Her boyfriend, who was filming, was baffled. The tree wasn’t making a sound. There was no wind—nothing he could perceive. But Burke, who is blind, had known it was there before she touched it. “This tree was so loud, it freaked me out,” she told him.

Burke, a blind advocate and content creator, shared the moment on TikTok in a video that has racked up hundreds of thousands of views. What she’s using is called passive echolocation, and as she explained to Newsweek, it’s a real, trainable navigation skill—not a party trick or a superpower.

@mollyburkeofficial The power of passive echo location! It’s not just a cool party trick, it’s a useful skill that I’m grateful my O&M instructor taught me as a child.........

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