One-Word Prompt #141 - Serpent's Coil Vault (Patreon)

Hey all,

I've got a new one-word prompt for you all: Serpent's Coil Vault. Here's the intro:

Dare to delve into the Serpent's Coil Vault, where cunning traps and the elusive guardian serpent await those who seek the legendary artifact hidden within its treacherous depths! This Fifth Edition adventure is designed for three to five 1st-level characters. Tables and sidebars in the document offer tips for scaling encounters to fit higher-level groups.

In the comments, leave a single word. I'll modify one of the 15 areas in this traditional dungeon to fit your word.

Usual rules:

1) No proper nouns

2) Keep it clean

3) Defenestration and mirrors are banned from overuse

4) One word per patron