The longest lava tube in Oregon, the Lava River Cave, stretches for about a mile through the Newberry National Volcanic Monument south of Bend. It was formed about 65,000 years ago. Taking a jaunt ...

you can pay a visit to Lava River Cave. This underground lava tube extends for more than a mile beneath Central Oregon. When lava streams out of a volcano eruption, the outer edges begin to cool ...

Approximately 700,000 years ago when molten rock erupted from a vent in nearby Hart Prairie, the mile-long Lava River Cave was formed. Today, visitors can explore the cave's cool, dark expanse by ...