They find a huge hole where Shadar Logoth used to be. There are residues of huge quantities of saidar and even greater amounts of saidin from unknown weaves. (CoT,Ch19)
The investigating party reports to the Hall. Akarrin begins the report as the leader, then Nisain continues as she has the greatest expertise in residues. (CoT,Ch19)
Other References
CoT,Ch18 – Anaiya announces that Akarrin and the others have returned. Several Sitters call for an immediate meeting of the Hall.
CoT,Ch19 – Akarrin is weaker than Siuan, but she is still the strongest of the party.
CoT,Ch19 – The members of the investigating party were chosen because of their expertise in reading and analyzing residues.