Giant Stronghold

Once past the traps, the two orcs charge forward to attack. They are reckless and feel powerful as doorwards for the giants. This is their undoing, as the party will likely make short work of them. Once they are defeated, only the yawning door of the tower awaits... and whatever lies beyond.

What lies beyond are two fire giants, a trio of hell hounds, 5 magma mephits, and 3 more orcs. The giants wait above, oblivious to anything taking place at the base of the cliff. The first floor of the tower has two mephits, which will attack when the party enters the room. The stairs lead up to a second floor, with three smaller rooms off a short hall. Two of these open onto barrack type rooms used by the orcs. The third holds two more mephits.
At the end of the hall, a door opens into the outer wall of the stronghold lining the cliff. There are three chambers here, with a mephit and two hell hounds roaming the halls. A courtyard opens off the outer wall, with the main keep beyond. The last remaining hell hound is in the courtyard, and will be joined by one of the fire giants. After a few rounds of battle, the remaining giant will emerge to watch initially, but will join in the fight if it decides the party are a sufficient challenge to the fire giant and hell hound.
If the party is able to overcome the giants, they can search the remainder of the keep for treasure and information. After a challenge like this, they are likely to find something significant inside. I'll need to give that some thought...