The Rockseeker Brothers obtained a map to the long-unused Phandelver Mine within the Wave Echo Caves and began mining expeditions to rediscover its entry in the Sword Mountains. Stalked by Nezznar Baenre, calling himself The Black Spider, their project came to tragedy.
- Tharden is killed by The Black Spider's bugbears and Nundro (the youngest) taken prisoner and held inside the caves.
- Gundren, the Eldest, is also later captured by King Grol and held in Cragmaw Castle.
- Sildar Hallwinter employs the party to find and free his good friend Gundren.
- Though rescued by Our Party, Gundren is severely injured and must travel to Waterdeep for treatment.
- On returning, he is happy to be reunited with his brother Nundro (also freed by the party), but also financially ruined with the collapse of the caves around the mines.
(See the events of Lost Mines of Phandelver )