The program is called the Subterranean Challenge.
Lunar caves aren’t just scientific curiosities—they might be our future homes.
Excavating a long-hidden cemetery in a cave.
Bring multiple light sources, more than enough air, and follow the line.
Ghosts of bats past.
Cave deposits reveal the region's stormy past.
Deep in caverns around the world, bacteria are laboring to make antibiotics we can discover and use for ourselves.
Flying bumper cars
Spelunking as a space simulation
Belgian cave holds remains of cut leg bones
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