Lava River Cave, part of the Newberry National Volcanic Monument, offers self-guided exploration of a mile-long lava tube. The cave was one of the first lava tubes to be discovered in Oregon and is the longest one in the state.

This mile-long lava tube cave was formed roughly 700,000 years ago by molten rock that erupted from a volcanic vent in nearby Hart Prairie. The top, sides and bottom of the flow cooled and solidified first, after which the insides of the lava river continued to …

One of these wonders includes the Lava River Cave in Flagstaff, which was formed by molten rock that erupted from a volcanic vent near Hart Prairie. As the lava flowed from the vent, the outside hardened into a tube-like formation.

2024年8月1日 · I visited Lava River Cave as part of my trip to Newberry National Volcanic Monument in Bend. Being formed by lava flow, this cave is an unusual attraction compared to other caves & caverns. There is no lighted path inside the river cave, but for the metal stairs in the beginning part of the cave.

2023年8月18日 · Just outside of Bend, Oregon, an enormous lava tube extends over a mile underground, at one point passing 80 feet below US-97. Formed by ancient basaltic lava flows, the Lava River Cave is the largest known lava tube in Oregon and one of its most memorable geologic wonders.

Lava River Cave offers self-guided exploration of a mile-long lava tube. It takes approximately 1.5 hours to tour the entire cave. Initial access descends 150 stairs to an uneven floor and can be challenging.

Hikers can make the two-mile (round-trip) trek between early May and mid-September and walk through the fascinating cave by taking a few sets of stairs, following a boardwalk, and navigating uneven terrain within the tube. At its widest point, the …

One is Lava River Cave, the longest known lava tube in Oregon; steps take visitors 150 feet down to the floor of a smooth-walled cavern, which may be followed for nearly a mile.

2019年3月28日 · Located approximately a mile from Lava Butte, Lava River Cave is a lava tube formed by volcanic activity about 80,000 years ago. The cave is the longest known lava tube in Oregon, stretching approximately 1.5 miles from the entrance through Echo Halls, Low Bridge Lane, and Two Tube Tunnel to Sand Gardens.

2012年2月13日 · The Lava River Cave, located 12 miles (19 kilometer) south of Bend on the east side of Highway 97 and part of the Newberry National Volcanic Monument, is a prime example of a lava tube.