Orc Lair

Crossing the canyon floor to reach the cave entrance is fairly easy (contested Stealth check vs orc passive perception 10). There are three orcs patrolling outside the cave on the ridges above town. If the stealth checks are successful, the party reaches the opening unseen. If they are detected, the orcs rush toward you yelling, but it is still possible to enter the cave before they arrive, although they will be there soon.
Once inside, the first area you find is an entry area with discarded junk scattered around, as well as two guards sitting against the right-hand wall sharing a tin of food, with their weapons on the ground at their side. This gives the party a surprise round.
Rooms 2 through 7 on the map have small groups of orcs, two fighters and 3-5 juveniles. The larger rooms 8 and 9 have larger groups with 6 orcs, 2 war chiefs and 8-10 juveniles in each room. Room 10 houses 4 Eyes of Gruumsh, with room 11 serving as a shrine area. There is one Eye of Gruumsh and two orcs in the room.
Room 12 is the central meeting room, with a large fire pit in the center and room for the entire tribe to crowd in for war councils. At most times, there are 3-5 orcs and an orc war chief present. The party can move quickly through the dark chambers, but if they were noticed coming into the cave, the word will spread within a couple of rounds, and the fighters will close on your location while the juveniles retreat through the tunnels away from you.
If the party moves quickly to the central war room, they can kill or capture the war chief leader, and be able to demand an audience with the remaining chiefs. They will agree, since they are all in line for the leader role, and eager to strengthen their case in any way possible. By doing this, they can negotiate their escape without fighting the entire clan (children included). The orcs will offer directions to the fire giant stronghold in exchange for their pardon, and will promise anything to be left to their own devices.
They will let you go, but plan in their own minds to follow late at night, and ambush you in the open. They will also send a pair of riders ahead to warn the fire giants that they are being stalked.