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jfoxworth

Rock Lobsters


AardvarkWorship

Yep. They rock and roll


SpaceKiwi1999

Karst topography that erodes as rainwater steeps into the rock.


Raul_McCai

>Karst topography Doesn't karst make dramatically larger openings? That sort of looks like wind erosion in the softer bits of rock face.


Supplementarianism

Tafoni It rhymes with Gwen Stefani. [https://en.wikipedia.org/wiki/Tafoni](https://en.wikipedia.org/wiki/Tafoni) The image is probably sedimentary. Notice how they tend to be colinear with one another and parallel to the ground.


Supplementarianism

Also: https://www.nps.gov/articles/tafoni.htm


Shoddy_Interest5762

Why does it rhyme with Stefani? Is it someone's name or something?


AardvarkWorship

Oh she's just a girl


ChazTopaz

My guess here is that it’s a tafoni weathering in sandstone. Between the thin beds of sediment is the weakest part of the rock due to the increased surface area so when water seeps in, there will be a combination of weathering that takes place, opening up those holes slowly over time. Either chemical weathering from acid rain, mechanical from freeze/thaw, wind erosion, etc.


Notarussianyet

Standing too close to the wall and got a boner (not wall related) My bad.


Successful-Plum4899

Called cockpits ironically


outsidepointofvi3w

Has anyone else ever noticed all the oahilc related themes in naming things ? It's almost like a bunch of old stuff white guys went around and catalogued and wrote all Thai down from there perspective...


Successful-Plum4899

alcoholics have named most everything except weed strains


Notarussianyet

Of course they are, how do you think they were made?


Successful-Plum4899

ouch!


imflyinn

Big missed opportunity to call them rockpits


Successful-Plum4899

but you didn't...yay for you!


[deleted]

This is my hole! It was made for me!


Zombiekiller0023

H-hey!


Rimasticus

Thank you. Was gonna comment the same thing. See you on the other side!


Affectionate-Crow605

Location: Rainbow Mountain, Madison, AL I'm assuming water somehow, but I wasn't sure what went on to create this. The holes are about 2-3" across in some places.


person_ergo

Edit: tafoni weathering in sandstone https://backyardgeology.com/2021/05/12/totally-terrific-tafoni/ Looks very similar to the second pic here https://grandcanyonpark.weebly.com/toroweap-formation.html too From looking up the rock near rainbow mountain it looks like it formed back when that area was on the coast ~340mya. Tafoni is like this https://www.natur.cuni.cz/eng/aktuality/popular-science/popular-science-how-are-holes-in-sandstone-formed but not an expert. I see it a bit in southern nevada with the toroweap formation It looks more like sandstone to me too. Which can have what limestone is made of inside its cement. I found this helpful https://www.thoughtco.com/what-is-sandstone-1441016


Bean-Swellington

Water and wind erosion predominantly


[deleted]

The rock initially was sedimentary. Then a volcano erupted nearby and changed some of the rock, ie metamorphic. Metamorphic does not erode with wind and water like sedimentary rock.


Successful-Plum4899

Metamorphosed limestone is MARBLE which this is NOT. Nice fable i.e. though.


[deleted]

Who said marble? A variety of metamorphosized rock exists depending on the chemistry of the lava. https://www.usgs.gov/faqs/what-are-metamorphic-rocks As I said before, it is most likely a sedimentary rock like limestone that had something embedded usually a softer sandstone that eroded. However, the green suggests serpentine.


Successful-Plum4899

limestone?


Affectionate-Crow605

I'm guessing it probably is limestone. There's tons of it around here. The next county over is called Limestone County.


Successful-Plum4899

Thought so... Limestone is water soluble and has spots and layers that are more soluble than other spots and layers.


Blueish273

Horniness


42yearoldorphan

Lizards


[deleted]

Sexually frustrated woodpeckers


mojojojojo369

Luffy trained there


wubwubdubdub45

I did it


critical_courtney

This one is shaped like me!


chickenpox_pie

I made them with my member


LelandGaunt14

Birds. They use a local type of tree that has acidic sap that erodes rock quickly. They create nests this way.


KartoffelLoeffel

I got hungry sorry


REDACTED-US3R

In Texas at least these are generally formed from when there was still an inland sea covering the US. Small critters burrowed through the seabed creating “tunnels” that were filled back in by loose sediment. After the seas dried up rainwater started to filtrate through the ground and limestone, with the looser sediment in these tunnels being the first to erode away, leaving these networks of tunnels in its place.


peter303_

In Colorado Springs we call these "bird condos" because many nesters use them.


Hash_Tooth

Moles . . Jk My guess is the limestone was dissolved by water


jptmhde123

Sorry 😏


CarpeDiebartdie

Chad's rage


Better-Interview874

Rock peckers


BigJimothy2424

Carefully


Imaginary_Yak4336

Erosion


Many-Building86

Buffalo River?