The monument’s caves date back 40,000 years, when volcanic activity created lava tubes, which cooled and drained to create ...

One hundred years after John Wesley Powell’s historic trek down the Grand Canyon, National Geographic went on a commemorative ...

NASA scientists let loose "screams of delight" amazement as they saw micrometeorites impact the far side of the Moon.

Arizona is home to caves that feel mysterious, dramatic, and completely removed from the everyday world above.

If you’re not looking closely, you may miss the many secrets hidden by Barbara and Stephen Fox, of Stamping Ground. Through ...

Take a tour through volcanic history on the edge of the Sierra Nevada near Mammoth Lakes, California. Between the tall ...

Underground places you won’t believe are real Hidden cities. Salt mine shrines. Skull-encrusted catacombs. Glowworm ...

Lava River Cave is the longest lava tube in Arizona, stretching nearly a mile into the earth, and it’s one of those rare ...

Hytale Update 4 comes packed with new content, including 500+ new blocks, proximity voice chat, creative tools, gameplay tweaks, and much more.

A moon exploration simulation with robots was conducted in a Jingbo Lake volcanic lava cave in China. Research indicates that there are considerable lava pipe systems distributed beneath the surfaces ...

SKAMANIA COUNTY, Wash. — What looks like a quiet, snow-covered forest near Trout Lake holds a surprising secret just beneath the surface. Instead of a dirt trail, the journey begins with a trek deeper ...