RESOURCE INFORMATION:
Size: ~150x150

More screenshots here: 

Imgur album

3D Viewing: Click

THE ARENA HAS:

  • x3 NPC spots
  • 3 Crates
  • Spawn Island
  • Houses with interior

FILE FORMATS: .schematic

IMPORTANT!!!
Before loading the schematic:
/gamerule randomTickSpeed 0 (because the leaves from trees can fall down)