A demolished hall whose column grid is all that stands. The centre is a dark open slab — the grove — carrying nothing but a lattice of bare columns, fully crossable from any direction and impossible to lock down. Around it, a perimeter loop and the classic west and east courts give the cover; the middle stays permeable, contested ground no one can hold.

Key features:

• Open central column field — no walls, fully crossable
• Deliberately unholdable middle ground
• Perimeter loop with west and east courts
• Crates and low walls for cover around the grove