The Black Gate
The Mountain of Fire #24 (x1)
Location
0 (-)
Mordor.  

Immune to player card effects. The players cannot travel here.

The Black Gate gets +1 Threat for each resource on it.

Forced: At the beginning of the quest phase, place 1 resource here and raise each player's threat by 1.

The great doors of the Black Gate swung back wide. Out of it streamed a great host as swiftly as swirling waters when a sluice is lifted.
–The Return of the King