I've decided my concept and modeling is underway, I'll post some pix tonight. Conceptually here's what I'm shooting at:

Image will consist of Stonehenge over which will hover some sort of alien spacecraft. Gathered around Stonehenge will be a crowd of Druids, at the center of stonehenge will exist the aforementioned black monolith and kneeling in front of the monolith a single druid. The space craft will be emitting some form of 'beam of knowledge' into the monolith which will then be emitting that beam to all the druids in the scene.

I suspect that this will work better as an animation and so, I will shoot for that.