If anyone's interested in the formation of Devils Tower:
A long time ago, the area used to be a shallow inland sea. Rocks were sedimentary (sediments became compacted - mainly sandstone and siltstone). It's been decided that the tower is a laccolith/igneous intrusion or it's a volcanic neck (magma cooled inside volcano). Magma was forced upwards but never made it to the surface. Since sandstone and other sedimentary rocks are easily eroded, the tower was eventually exposed.
![image showing I almost missed the side road to this shot. Devils Tower National Monument, WY. [OC] [6000 x 4000]](cd8ad5e9-5829-5b68-b232-97bf33d0a76f.jpg)
LonelyPleasantHart on May 25th, 2017 at 21:27 UTC »
Some serious alien sightings happened around this rock.
zoziw on May 26th, 2017 at 01:06 UTC »
Yeah, I got one just like it in my living room. Who are you people?
mnw717 on May 26th, 2017 at 01:44 UTC »
If anyone's interested in the formation of Devils Tower:
A long time ago, the area used to be a shallow inland sea. Rocks were sedimentary (sediments became compacted - mainly sandstone and siltstone). It's been decided that the tower is a laccolith/igneous intrusion or it's a volcanic neck (magma cooled inside volcano). Magma was forced upwards but never made it to the surface. Since sandstone and other sedimentary rocks are easily eroded, the tower was eventually exposed.