The spire base is a covenant spire on halo.
Battle of halo[]
It was a staging area for the covenant were ocelot was captured and where Raptor,Thel, andFirelight were stationed
Heresy[]
When Thel and a hand full of elites turned against the covenant they captured the spire for a while but was then taken back.
The end[]
The fate of the spire is never revealed.