Abstract: A mobile, transportable ground level skydiving simulator apparatus is provided that includes a collapsible air containment unit for directing air upwardly therethrough to enable a user or users to be supported by the airstream in simulating skydiving activities. The air containment unit is provided on a movable platform, such as a flatbed trailer, with all or substantially all components of the apparatus being mounted thereon or capable of being stored thereon in transit. The various elements, but in particular the air containment unit, are of a design that enables quick and efficient breakdown or disassembly of the components for transport with the apparatus on roads and highways, and which enables quick and efficient assembly of the components into an operable structure at successive locations.