Scientists have identified eight mysterious water-shaped caves on Mars, unlike volcanic tunnels, raising fresh hopes these ...

California is a great place for spelunking -- aka exploring caves. While you might think one cave is like another, each one ...

An ancient Martian system of canyons and valleys could be home to archaic life forms, a ground-breaking scientific paper has ...

A team of Chinese researchers has identified eight caves in Mars’ Hebrus Valles that may have been sculpted by water. These ...

Mars often feels finished. Mapped, scanned, labelled in broad strokes. Yet every so often, something unsettles that sense of ...

Aside from drawing more tourists, not much has changed at South Dakota ’s above-ground attractions such as Badlands National ...

Patagonia is full of otherworldly sights. While these brilliantly colored and patterned caverns may be challenging to get to, ...

Beneath the moon's cratered surface lie networks of lava tubes and deep pits, natural caves that could shelter future lunar ...

A drought lasting 13 years and several others that each lasted over three years may have contributed to the collapse of the Classic Maya civilization, chemical fingerprints from a stalagmite in a ...