Where is Gravelyn in AQWorlds?

After you choose the Evil side OR watch the cutscene where King Alteon defeats ShadowScythe, you may open your map and click Shadowfall in the bottom right corner, labeled on a red button along with other major areas. (Battleon, Dwarfhold, Akiba, etc.)Then go into the fallen undead castle, go into the right room then travel into the top room, don't worry, the skeletons won't attack you. Hope this helps!