Brian Grubb rides America's longest subterranean river

Deep within the pitch-black depths of Bluespring Caverns in Bedford, Indiana, two-time world wakeskating champion, Brian Grubb, initiated an unprecedented venture.

Submerged an incredible 30 meters beneath the surface, he readied himself for a groundbreaking exploit - the world's first underground e-foil expedition.

Guided by the spectral luminescence of LED lights fastened to his e-foil, Grubb coursed through the aquatic topography.

por Surf News | Headlines and Top Stories https://ift.tt/yx7R4Zg

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