NASA's Landsat 8 satellite snapped a stunning top-down view of an "unusually spectacular" Mount Etna eruption. Infrared data makes the volcano's lava river really pop.

Located in Marianna, Florida, near its borders with Alabama and Georgia, Florida Caverns State Park is the only park in the state that offers cave tours to the public. Take a guided tour of the ...

From exploring Arizona canyons to Utah buttes and beyond, our national parks columnist shares the most adventurous Southwest ...