"Owls and Vultures" by Dennis Allain 
  

This concept was based on a design for a bird aviary contained within an abandoned hanger. We do not know how the door was left open. The explorer is also left to question why such a large cage was constructed in the first place. The detail in construction gives us a sense of purpose and the sheer scale of the vaulted ceiling provides the viewer scale. However the full meaning is mysterious and the secrets the cage once held are left up to the witnesses interpretation.