[It was a strange sensation to be within one's own memories. A little disorienting and Grievous took a moment to observe. Yes, there were those he recognised here; fleeting images of Kaleesh warriors he'd fought alongside and also led into battles. They were not his closest, though. Not his family nor... No, he couldn't think of her now. There was that jagged crystal to distract him. He frowns at it. It felt at once deadly and fragile - as if it would shatter and the shards be lethal. But he would not be afraid...]

This a corruption.

[He growls the words and reaches out to the monolith. It seems to shudder at his approach - although whether that is a warning of danger or from somehow knowing it doesn't belong and much be destroyed, he isn't sure.]