オレゴンの最高の洞窟は、州全体にわたる多様な地質学的形成を特徴としています。オレゴンには、広大な溶岩洞、古代の大理石の洞窟、ユニークな海食洞があります。これらの自然の驚異は、探検のための様々な体験を提供します。この地域の地質は、これらの地下景観に豊かな環境を提供しています。
最終更新日: 4月 2, 2026
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オレゴン周辺で人気
Oregon Desert Trail – Roughly the Right Direction
オレゴン・ティンバー・トレイルで高い熱
4,200キロメートルの荒野 - 太平洋水分線トレイルからメキシコにカナダ
Corvallis-to-the-Sea Trail — 野生のOregonを歩く
Bigfoot Trail — 人里離れた Klamath Mountains を探検
Oregon Coast Trail — 太平洋の縁に沿う忘れられないウォーク
North Umpqua Trail —オレゴンの豊かなオーバーカントリーをRidingする
Timberline Trail — A Scenic Mount Hood Adventure
North Umpqua Trail — 滝、湖&ラヴァ
OC&E Woods Line State Trail —オレゴン州で一番長いレール・トレイルを探検
Back when the Santiam Wagon Road was in use (between 1865 and 1939), House Rock offered temporary shelter during storms. This massive stone forms a natural cave. Giant old growth trees surround this interesting spot on the old wagon road. Definitely worth taking some time to check it out.
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The short jaunt to Boyd Cave is worth your time - you can explore just the small chamber at the foot of the stairs, or bring headlamps and flashlights to check out the nearly 1880 feet of lava tube cave that stretches out from the access point.
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The Oregon Caves Visitor Center is open from spring through fall. It offers cave tour ticket sales, information, exhibits on the Oregon Caves and Siskiyou Mountains, Junior Ranger programs, and a bookstore. Visitors can access several popular hiking trails from here, including the Cliff Nature Trail and Big Tree Trail. The visitor center is also where you meet for guided cave tours. The caves are only accessible if you are a part of a guided tour with a ranger (please visit https://www.nps.gov/orca/planyourvisit/cave-tours.htm for more information on the cave tours). Due to high demand in summer, it is recommended to check current conditions and purchase tickets at the Illinois Valley Visitor Center, which is located in Cave Junction at the bottom of Cave Highway.
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This is one of many lava caves that exist in the volcanic landscape of Central Oregon. The entrance is very narrow, leading to a small chamber and another narrow and steep hole to get deeper into the cave. Bring a headlamp or flashlight and don’t go alone!
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In the early spring, the rushing waters of the Rogue River may obscure the features of Natural Bridge - where the waters briefly dip underground as they roar through a lava tube. The gate remains closed until early spring; you may have to hike in from the road if this is the case.
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Crack in the Ground is a stunning geological feature within Four Craters Lava Bed Wilderness Study Area. The volcanic fissure is two miles long and up to 70 feet deep. You can take a hike into this gorge. Keep an eye on the weather, though, and avoid it during rain since it might get flooded in a rain storm. It is just a short detour if you take the Christmas Valley alternate of the Oregon Desert Trail.
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You can find Boca Cave by taking a short spur trail near the summit of Triangulation Peak. The cave offers some pretty cool views from the entrance and is actually a pretty wide shelter in itself once you start walking through it. If you've already gone up the slopes of Triangulation Peak, this is worth a visit.
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You can find Boca Cave by taking a short spur trail near the summit of Triangulation Peak. The cave offers some pretty cool views from the entrance and is actually a pretty wide shelter in itself once you start walking through it. If you've already run up the slopes of Triangulation Peak, this is worth a visit.
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