Based upon my Aero-Thunder Dome, but with RF 4.5 buildings and Fx. You can add more stuff via "Airport Edit" utility in RF. Experiment and create more elaborate design. The walls are intended to be virtual, but if you want collisionable walls then download "Aero-Thunder Dome Collisions Added A" (mods made by Knife Edge member "Mystery" (who by the way did a nice job). Let me know what you think ... thanx PS.. It would be cool if a lot of fliers downloaded this and then used it for multi-flying on the internet. Oh yeah, in order for the Fx to work ... In your settings menu, your graphics in the quality menu must have the clouds, particles set to yes and particle quality should be set to highest.