Last week we visited Crack in the Ground in Central Oregon near Christmas Valley. You may be wondering what exactly this place is. Well… it’s a huge crack in the ground in the middle of the desert.

I wasn’t sure what to expect, but I was impressed by the crack’s picturesque angles and curved surfaces.

There’s a 2-mile trail inside that reaches a depth of ~70 feet below the surface. We took the left path that has a more gradual entrance. It’s in the middle of the picture below. This trail is relatively easy but if you go the whole length, expect to climb over boulders and through some cracks.

But how did this crack get here? It’s an ancient volcanic fissure. I learned in most climates, fissures fill up with soil and rock from erosion. Since it’s so dry here, there has been relatively little filling.

Crack in the Ground sits within the Four Craters Lava Bed. During the Pleistocene, four cone volcanoes were active here. A shallow depression formed when older heavier rock sunk. The fissure opened near the edge where there was tension along a fault zone. This Bureau of Land Management map shows the extent of the lava beds and the location of Crack in the Ground.

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