Lava Flume Tubes

Stealth

+19 (trained)

Disable

Thievery DC 29 (expert) to block a channel, or Thievery DC 31 (master) to release the floor latch and escape to the chamber below

AC 30, Fort +20, Ref +16

Channel Hardness

12

Channel HP

48 (BT 24) to destroy a channel gate (this prevents that channel from being disabled and stops the trap from resetting); Floor Hardness 18; Floor HP 72 (BT 36)

Immunities

critical hits, object immunities, precision damage

Flume Activation [Reaction] Trigger A creature tries to leave the room.

Routine

(4 actions) The trap loses 1 action per disabled channel each turn. On each action, a different channel spews lava, dealing 4d6 fire damage to each creature within 10 feet of the channel (DC 27 basic Reflex save), and increasing the depth of the lava in the room by 1 foot (4 feet per round if all the channels are active).