Shadow Elves and their lands:

• Aengmoor: a city of the Shadow Elves which was overrun by orcs. Rafiel said Tess should try and recover this for the people rather than the people trying to return to the surface. Tess also found out that Rafiel had no objections to him marrying Phoranin. There are many dangers there according to Charastra.
• First Shadow: main Shadow Elven army, Tessarael was a member, and then joined the Second Shadow. From the Second Shadow he was recruited into the Eyes of the Serpent.
• Grarfaele - see religious information: prophecies, and Radiant General in info on the Brotherhood of the Radiance
• Hammer of Rafiel: a general of one of the Shadow Elven armies, whom there may be prophecies about.
• Radiant General is Grarfaele, prophecies about him in the concordance of Rafiel ... possibly is Hammerhand.
• Contact with wanderers isn't permitted. Tess isn't really a Shadow Elf any more though. Might contact his father in a few years to see if he's still alive.
• Tunnel shapers can dig tunnels magically underground. This is used extensively to deflect humanoid attacks on the Shadow Elves.