@BarryFromMars  
Yes! If I had any talent, I’d do it.

@Lawful Girly
 
That should be a picture.

Character consistency at its peak.

@Background Pony Number 17  
I know that now, but I try to be correct with my subtitles because if I’m wrong about something it bugs me and then I have to put in effort to change it and putting in effort is uugggggghhhhhhhhh.

“Extrusive andesite” is a real thing, OP; it’s a type of volcanic rock. Maud’s showing off her college learning there.

AJ needs to clean her frogs.

@Background Pony #CED4  
wasn’t there one in dragon quest?

Volcanoes confirmed in Equestria.
 
I’d love to see one in the show tbh

@Background Pony #C572  
I can do it. I can do it nine times.

Extrusive means that it was lava (above the surface) and andesite is a fine grained granitic rock named after the Andes mountains, where it is common. Gotta love the internet and a moderate curiosity of geology.
 
So yes, it does make sense (even if it isn’t sufficient to deduce that she was sledding). Anybody caption Maud’s Mohs hardness scale joke?

“Extrusive igneous rocks erupt onto the surface where they cool quickly to form small crystals. Some cool so quickly that they form an amorphous glass. These rocks include andesite, basalt, obsidian, pumice, rhyolite, scoria, and tuff.”
 
“Andesite is a large family of rocks that occur in most of the world’s volcanic areas. Andesites occur mainly as surface deposits and, to a lesser extent, as dikes and small plugs. Many of the deposits are not normal lava flows but rather flow breccias, mudflows, tuffs, and other fragmental rocks; the peperino near Rome and the trass of the Eifel district in Germany are examples. Not only the Andes, where the name was first applied to a series of lavas, but most of the cordillera (parallel mountain chains) of Central and North America consist largely of andesites. The same rock type occurs in abundance in volcanoes along practically the entire margin of the Pacific Basin. The volcanoes Montagne Pelée, the Soufrière of St. Vincent, Krakatoa, Bandai-san, Popocatépetl, Fuji, Ngauruhoe, Shasta, Hood, and Adams have emitted great quantities of andesitic rock.”
 
So yes, it’s a type of volcanic rock commonly found on mountains and (no surprise) volcanoes.

@A Sad Pony  
cut to Maud riding a sled straight down a mountain face, in defiance of gravity, expression blank

@Lawful Girly  
“That’s basically sledding.”  
“…No, it’s not.”  
“…Hmm. We must do it differently, then.”

“Uh, no, Maud. We went rock climbing.”  
“Well, I was close.”

I will never get tired of seeing Pinkie hug Maud.

@Background Pony #859B  
Yeah she’s filthy alright.

@PonyPon  
inb4 Applejack is a filthy mud pone  
Don’t take this comment too serious people, I’m only kidding of course!

@PonyPon  
because hooves?

she’s natural detective not like Twilight or Rarity.

Why would those still be there?