Crack in the Ground is a volcanic fissure about 2 miles (3.2 km) longMake Crack in the Ground a part of your Christmas Valley vacation plans using our Christmas Valley visit planner.
with depths measuring nearly 30 feet (9 m) below ground level in Central Oregon, United States. The formation of the fissure occurred approximately between 700,000 and 12,000 years ago.
The eruptions from the Four Craters Lava Field were accompanied by a slight sinking of the older rock surface, forming a shallow, graben-like structure about 2 miles (3.2 km) wide and extending to the south into an old lake basin. Crack in the Ground marks the western edge of this small, volcano-tectonic depression. The crack is the result of a tension fracture along a hingeline produced by the draping of Green Mountain lava flows over the edge of upthrown side of the concealed fault zone. The fissure is located at the southwest corner of Four Craters Lava Field. Hikers can walk the length of the main crack and explore its tributaries.
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Crack in the Ground reviews
Enjoyed hiking around this fissure. There is a picnic table and an outhouse too. Not busy. Even though it was hot there’s a breeze. more »
Interesting Oregon slot canyon, not terribly challenging (66 and 71 years old, relatively fit) 1.7 mile walk, maybe 1/2 mile of that in the slot canyon. Well marked getting to it, not marked when you.... more »
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