This is a heli platform.
You can land on this platform with a helicopter, then you can get on the platform and drive the helicopter into the hall at up to 5 km/h.
The mod can be found under Trailers -> Miscellaneous.
You can only enter the mod directly and not with Tab.
(For the platform to function properly, the space where this platform is used should be very flat.)
Janni1101
