The lands making up this tiny but mighty kingdom are as diverse as they are limited. Standing at the kingdoms very center turning in any direction one can see each of the 6 kingdoms almost at the same time. Each kingdom is roughly 8 square miles and each supported by it's mother crystal augments the land to suit the needs of it's ponies

The races

Earth: Fairly straight forward. These are the same earth ponies one might find up above but with a key difference. Earth ponies of the Cavalier kingdom are built like tanks with speed to match. While not the fastest race per se they are much faster then you'd give them credit for. The miners primarily they dig up crystals and raw resources and speed them amongst the other races. When it comes to growing food they don't know the handle from the blade on a shovel. However they are capable of "growing" new riders through a closely guarded process. They govern over the Earth kingdom though the soil is tainted this taint makes the purest of crystals and they treat it with the same reverence as their counterparts above.

Pegasus: Long have the pegasus lost their ability to touch the ground. Due to countless generations of floating over the ground thanks to their riders pegasus actually can't support their own body weights without the aid of their riders. They rely on quick and powerful strikes and long range weapons such as cannons and guns. These are the growers in this land. No one is capable of growing food in Tartarus due to the tainted soul but clouds are still manufactured and over countless years of tweaking it is possible to grow all manner of things in the complete darkness of tartarus safely. They ride the winds of their kingdom and while no natural breeze has been felt in years there are more clouds in their kingdom then the cloud cities above in addition the other races are capable of moving on these clouds as well.

Unicorn: Magic is trickery in Tartarus with no sunlight to aid in the natural regeneration of magic (It works kinda like Vitamin K in a way.) Unicorns have found ways of absorbing magic from the surrounding Crystals and using their riders as batteries relying more on their own power then riders as other races do. They govern their realm of Darkness harnessing that which has always existed around them and focusing it for more proper use.

Zebra: Culturally they are excatly the same as the zebras above however the key difference is the gods they worship are completly different. Over the years charitable demons have assisted the zebras in their efforts to carve out an existance here and were worshiped as gods in return. These connections have granted the zebras a unique kind of magic simply dubbed Voodoo by the other races. Master healers and keepers of Demonic lore the info they gather is stored in a grand libary that also serves as their capital. They of course dance before and worship fire and its said to flow through their veins.

Sea: Once a small rag tag group used to infltrate moats and other strong holds through the water supply the sea ponies an entirely female race use their riders to keep a bubble of water around their bodies at all times acting more like a life support system. Able to bend any water to their whim they rule the steam powered water kingdom where innovation rules. The true origins of their prince the only male seapony is a mystery that only his late mother knows and took to her grave.

Zero: While not a true race as it is composed of the other 5 the zero ponies are indeed still unique. All Cavalier ponies can integrate with crystal powered machines however the Zero ponies took it a step beyond. Shedding their mortal bodies they fuse with their riders and become known as a Zero. A Zero not capable of generation magic on it's on not even the minimal amount needed to power a rider. They require batteries known as soul drives to exist but there are Zero ponies that still exist from the kingdoms fall. They govern light in the most futuristic looking city of all but their tech is less advanced than even the earth ponies who live in homes carved out of stone due it all be ancient tech all races have access too.