Some of the unusual rocks carry stories about water on Mars. One has hints of long-gone microbes. All tell of a dynamic, complex planet.

The name “Purgatory Chasm” sounds like somewhere you’d send your in-laws when they overstay their welcome, but this geological wonder in Sutton, Massachusetts is actually heaven for adventure seekers ...

Rock and soil samples at Durupınar Formation contain marine deposits and seafood remnants, supporting ancient ship theories.

That’s Devil’s Den State Park in West Fork, Arkansas – a geological wonderland tucked into the Boston Mountains that somehow ...