The Underdark
Type: Vast subterranean realm beneath the surface of the Sword Coast (and most of Faerûn) Region: Below the Sword Mountains, the Sword Coast in general, and connecting laterally to other deep regions Status: Adjacent to the Leilon Silver Mine — the mine's deeper passages connect to Underdark routes First Reference: Session 020 / Session 021 (implied by the bug-hive ecology) Explicit Reference: Session 023 player notes — "sealed off, presumably headed for Southkrypt via routes through the Underdark"
What the Party Knows
- The Leilon Silver Mine's deeper passages connect to Underdark routes.
- The bug-hive that overran the silver mine in sessions 020–022 is probably an Underdark-surfaced ecology — the Hunters / Beetles / Hive Queen are foreign enough to surface fauna to suggest deep-strata origin.
- A large portion of Thaldrin's rescue party is sealed off underground after the corridor collapse — presumably driven into Underdark routes toward Southkrypt.