As I am the commissioner of the piece I'll give the details. The brown earth pony on the left is Sojourner; an archeologist and adventurer who, with her close friend and partner Pathfinder, a unicorn navigator and cartographer, own and run a museum together.



The background for this piece start when a friend and associate of theirs, a pegasus named Corsair and his crew of privateers, discover some sort of structure in the mountains of the frozen north; way beyond the borders of the Crystal Empire and Yakyakistan. As it was spotted from an airship during a rough blizzard they could only spot so much, but Corsair passed the word onto Sojourner. After a couple of months of research and preparation Pathfinder and she set off for the mountain and after a few days of rough travel, rock slides, strong blizzards, and the like they finally reach it; along the way finding a key that they only just now figured out.



Unbeknownst to them this structure is actually an old outpost from the ancient days of the empire of the yaks. It's now being used as a grand archive of history of the world; heralded by an alicorn record-keeper, and his unicorn assistant. But again; our two adventurers don't know that yet~