A short Washington trail turns into a strange natural adventure where ancient lava left behind a perfectly preserved ...

Beat the summer heat by going underground. Arizona is home to famous caves, like Kartchner Caverns. Here are 5 of the best ...

For hikers, Memorial Day is the unofficial start to hiking season. And there's no better place to kick it off than these six ...

While coastal Californians are calculating whether they can afford both rent and food this month, there’s a city where that’s ...