Question: That title is probably way too specific, but essentially I'm trying to develop my book's setting. Currently, my characters (a team of six adventurers) awaken as amnesiacs who were once human but now have been transformed into a motley menagerie, within a grassland. This hilly grassland has a road running through the center of it, and at one point, there lies a small mountain next to the road.

This mountain is rather important, as carved into its interior is a town named Rockhaven, where a plot-important SC (supporting character) awaits the team. What I don't know is what would cause a solitary mountain to form in the aforementioned biome-a grassland with rolling hills and plains-akin to the Kansan prairie. So, as you can see, my question is **What Could Explain A Solitary Mountain in a Grassland?**

Answer: 
[It's the place](https://en.wikipedia.org/wiki/Kata_Tjuta#Legends) where the great snake king, Wanambi, who resides at the top of the montain and only comes down to ground level in the dry season. His breath can turn a breeze into a hurricane, punishing those who committed evil deeds in the region.

[Kata Tjuta](https://en.wikipedia.org/wiki/Kata_Tjuta)

> 
> Kata Tjuṯa, (Pitjantjatjara: Kata Tjuṯa, lit. 'many heads'; Aboriginal pronunciation: [kɐtɐ cʊʈɐ]), also known as the Olgas, is a group of large, domed rock formations or bornhardts located about 360 km (220 mi) southwest of Alice Springs, in the southern part of the Northern Territory, central Australia. Uluṟu, also known as Ayers Rock, located 25 km (16 mi) to the east, and Kata Tjuṯa form the two major landmarks within the Uluṟu-Kata Tjuṯa National Park. The park is considered sacred to the Aboriginal people of Australia.
> 
> 
> 

[![enter image description here](https://i.stack.imgur.com/Qzuaz.png)](https://i.stack.imgur.com/Qzuaz.png)

[Uluru](https://en.wikipedia.org/wiki/Uluru#Age_and_origin)

> 
> Uluru (/ˌuːləˈruː/; Pitjantjatjara: Uluṟu [ˈʊ.lʊ.ɻʊ]), also known as Ayers Rock (/ɛərz/ airz) and officially gazetted as Uluru / Ayers Rock, is a large sandstone formation in the southern part of the Northern Territory in Australia. It lies 335 km (208 mi) southwest of the nearest large town: Alice Springs.
> 
> 
> Uluru is sacred to the Pitjantjatjara, the Aboriginal people of the area, known as the Aṉangu. The area around the formation is home to an abundance of springs, waterholes, rock caves, and ancient paintings. Uluru is listed as a UNESCO World Heritage Site.
> 
> 
> 

[![enter image description here](https://i.stack.imgur.com/z2kV7.png)](https://i.stack.imgur.com/z2kV7.png)

---

[List of inselbergs](https://en.wikipedia.org/wiki/List_of_inselbergs) around the world
Since there is a town in the interior of the mountain, perhaps the "mountan" is acutally a gigantic building built to contain a totally self enclosed habitat, including the town, reached by a few airlocks leading to the outside world.

And maybe the outside of the building has slowly weathered and assumed a more rugged and natural shape, although it still looks very artifical compared to most real mountains.