The tombs are located beneath the mausoleum in the Westwood Farmland. There are two altars found in the tombs and a number of skeletons wandering the halls. If the Princess is in possession of the Black Pearl Ring from the Golden Chalice quest, it will begin to glow when she nears the first altar. The second altar is related to the Greytower quest.

Spoiler: Upon touching the second altar, a sexually domineering vision involving Arto Benthur will play out.
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