The opening of the adventure...
"... Najjar used his contacts in the guild to gain access to the archive, where he located the stone tablet and ‘borrowed’ it for his research. Together with Boutaleb, he managed to decipher the tablet and realized that there was a hitherto undiscovered Vault buried somewhere within Ship City itself. The location appeared to be beneath the City of the Dead, where the bodies of the dead are buried and recycled by the Coriolite cult Wardens of the Well."
How did they discover this from the tablet when the PCs are expected to take the tablet to the obelisk to learn the location?
Thanks!