Many multi-purpose arenas use retractable or modular systems to hide a soccer field when transitioning to other events. Some venues use artificial turf that can be rolled up or removed in sections to reveal a different surface underneath. Others use a raised flooring system, where temporary panels made of wood, rubber, or synthetic materials are placed over the turf to create a solid surface for concerts, basketball, or other events. Movable seating, retractable stands, and barriers are also adj