Wave Echo Cave

Over five hundred years ago, human spellcasters from nearby Phandalin joined forces with gnomes and dwarves under the Phandelver Pact and together they combined their collective skills to mine Wave Echo Cave's magically rich ores and create a forge to craft magical items dubbed the Forge of Spells.
Everything came to an abrupt end when orcs, craving magical treasures, sieged Phandalin and the Wave Echo Cave mine. The battle destroyed Phandalin and much of the mine as well, causing various cave-ins throughout. Very few survived the conflict to relate the tale. The Forge of Spells become legend and the entrance to Wave Echo Cave was lost.