Tottori Festival

Tottori Festival was a regional event in Pokémon GO.

Features
These Shiny Pokémon were released at the start of the event: PS Sandshrew (027) PS Sandslash (028)

These Pokémon had increased spawn rates in the wild and from Incense or Lure Modules in Tottori prefecture region:

Announcement
The approximate translation for the event announcement was:

"To commemorate the “Tottori Festival” event, it will be easier to encounter Sandshrew and Alolan Sandshrew in Tottori Prefecture from Thursday, December 6 to Wednesday, December 19. Also, if you are lucky, you may be able to meet Shiny Sandshrew!"