Yakyakistan

Yakyakistan is the yak kingdom featured in the episode Party Pooped  exteriorly, in My Little Pony: Friends Forever Issue #26 exteriorly and interiorly, in the eighth episode of Baby Flurry Heart's Heartfelt Scrapbook exteriorly, in Not Asking for Trouble exteriorly and interiorly, in My Little Pony: Friendship is Magic Issue #55, in My Little Pony: Friendship is Magic Issue #56, in Yakity-Sax exteriorly and interiorly, in My Little Pony Best Gift Ever, and in My Little Pony: Nightmare Knights Issue #2. It is also briefly seen in Uprooted and The Ending of the End - Part 2. Twilight Sparkle mentions it is located north of the Crystal Empire, in a snowy region ruled by the yak Prince Rutherford, which had previously closed off its borders to Equestria for "hundreds" of moons. Pinkie Pie travels within an afternoon to the gates of Yakyakistan, but she slides off an icy cliff all the way back to Ponyville. Prince Blueblood, Shining Armor, and some royal guards visit Yakyakistan for a diplomatic mission to set up a trade agreement between it and the Crystal Empire. It is first mentioned on Enterplay collectible card game Absolute Discord  and #ƒ5, cards of Cheese Sandwich, and later mentioned in Dungeons & Discords as the site of an overnight goodwill tour hosted by Princess Celestia. InMy Little Pony: Friends Forever Issue #24, yaks represent Yakyakistan in a Boffyball game against Griffonstone.

In When the Cold Breeze Blows Away, they would be allied with Equestria and the Grand Alliance that they can be ruled by Prince Rutherford