A short Arkansas trail leads to a cave-fed spring, clear rushing water, limestone bluffs, mossy rocks, and one unforgettable Ozark view.

Manitou Springs may be known for its proximity to Pikes Peak and Garden of the Gods but it is also home to another geologic wonder: naturally filtered mineral springs that rise deep from the ground.

While you may not have heard the term water turbidity before, you've probably seen it. Think about a muddy puddle or runoff on a road after a storm. The water looks murky. That's high turbidity.

For decades, Oregonians have pulled over for fresh spring water on a stretch of Highway 26 between the Oregon Coast and Portland.

For decades, Oregonians have pulled over for fresh spring water on a stretch of Highway 26 between the Oregon Coast and Portland.

Where is the fountain of youth hidden? Tucked away in a small park, an unassuming creek flows beneath an arched bridge. Families picnic nearby. At first glance, you may not realize you're looking at ...