"I am familiar with the explosion, naturally, but I also know that it happened some time ago. I haven't been out myself, largely because I've always figured that explorers since then would have already made those discoveries in the years since. However, I certainly understand striving for the unlikely. For me, I hold on to the fools dream of discovering a new tomb, heretofore unknown, and being the first in untold years to step foot in it. It is one of the reasons I devote myself to historical studies; in the hope of discovering clues among the histories. I must sound the fool to you, I'm sure, but it is what it is. Know what i mean?"
"A new tomb? You are hopeful!" Kassu said, smiling. He waved the notion off. "I think you may be desperate, my friend."
Sense motive check to try to determine if he's being honest with me in all this.
Arundel believes Kassu has told him the truth. As soon as he raised the subject of an undiscovered tomb the wizard became intensely interested and is hiding it badly.