Wild Area Event #2: Snorlax .

This wild area event held by Sword and Shield. It made Gigantamax Snorlax the focus of the event.
For base game Pokémon Sword and Shield, without this event, there is no den that will enable players to encounter a Gigantamax Snorlax.

As per the previous events, Drednaw and Sandaconda were Sword exclusive raids, and Corviknight and Centiskorch were Shield exclusive raids. Butterfree and Snorlax can be obtained regardless of game.
Though it is important to note, host can include players of the opposite version to join in the raids.

This event ran globally from December 4th, 2019 to January 9th, 2020.
The running of this event was interrupted twice in favor of other events:
#3 Christmas 2019 (Index 03 and Index 04)
#5 New Years 2020 (Index 06)

To import these files into your save, use PKHeX's block importing function. Our tutorial should guide you through it.
Our first post of this page would contain some data relevant to the importing stage.

There's info and some common questions regarding Wild Area Events here.

To see other Wild Area Events, here.