The 23 Artefacts of Syvega
Wyvern Mountain is home to a tribe of hobgoblin warriors who keep goblins and orcs as slaves. In addition to the hobgoblins, this is where the druid that was the mission of the group supposedly lived, and he was the reason they came here. Lastly, this is also where the supposed nesting grounds of great wyverns are, though they are said to reside at the top, at Wyvern Peak.
When the adventuring party arrived they found the Scarlet Shadow being attacked and killed by the hobgoblins before jumping in the fight. Once inside they navigated the saves and freed the orcs and goblins, but not without first information about the cave.
Many hobgoblin deaths later, they found the dungeon where the druid and other prisoners were held, and brought the druid back with them to Seredia.