>>26654477Ground type, probably the 6th Gym.
For the team, I'd use Krookodile, Mamoswine, Camerupt and Gliscor. My ace would be Krookodile
The Gym is an open-pit diamond mine. There are five layers, the Leader being at the last. Before reaching the stairs to a lower layer and face the Trainer that guards it, you must walk through a little maze.
The Gym Trainers would mostly be Ruin Maniacs, though anyone is welcome.
Badge would be the Diamond Badge, shaped like a blue Rupee.
TM would be Dig or Bulldoze.
Costume is shown in pic related.