"Box." Jara agreed readily enough; he knew what those were, though he frankly had no idea what a tomb might be, much less who the Egyptians were or why they would want to prevent decay--Hork Bajir burial practices mostly involved digging a hole beneath a tree so their fellows could be laid to rest amidst its roots. Spiritual aspects of the tradition aside, it tended to be very good for the trees they depended on, and that was something they'd never be able to accomplish if they put a box around their dead to keep them from being restored to the earth. Nevertheless, he brought his claws up to mimic the gesture thoughtfully, sketching the sarcophagus' dimensions and shape and considering. Most of the boxes he had handled as a host were square or rectangular....

"No sarcophagus." Jara concluded, after a period of thought trying to remember all the cargo he had hauled. "No sarcophagus at Yeerk Pool. But Vissers have ship for self. Blade ships for Visser own use. Might have sarcophagus on Blade Ship?" His own Yeerks had never seen fit to explain a great many things to him--or really talk to him almost ever, honestly. Short of being in the chamber himself to see it, or hearing other Controllers talking about it, he would have had no way of knowing it existed or not.

The thought was a little troubling, though; Jara had always thought that when a Yeerk was dead, it was dead. What if they could get brought back to life? What if the others in the Valley were to get captured again? Maybe it didn't matter. After all, if only Vissers had a sarcophagus, then the only one on Earth would belong to Visser Three. Visser Three would never stoop to taking a Hork Bajir host again if he could help it. But if he was able to come back to life....

Well, then they would just have to kill him again, if they could manage the first time. Again and again and again, until he couldn't be gotten back tot he sarcophagus. Until the evil creature stayed dead, where he belonged. That was all there was to it--nothing else would do.