Treasure and Trouble

Once you reach the higher reaches of the slope you are able to quickly identify three caves that show signs of traffic in and out. It seems clear that they have been serving as the ettins' living quarters for some time. Moving closer is unsettling, as you begin to notice piles of clean-picked bones scattered among the rocks. Occasionally, there are scraps of clothing and armor, as well as broken arrows and swords.
Moving closer also subjects you to a terrible odor that seems to pulse out of the cave mouths. The worst odor seems to come from the cave to the left, and the cave in the middle gives off the least.

As it turns out, the ettins had something of a little family home going here, complete with pets... They discarded their unwanted and extra organics in the left-hand cave, feeding a pair of otyughs that have taken residence in the offal piles. One of the ettins lived in the central cave, with a portion of treasure squirreled away in a smaller cave off the main chamber. In it is a pile of scavenged detritus including 700 cp, 200 ep, and 100 gp. There are also 6 weapons of note, two hand crossbows, a great sword, a trident, a +1 halberd and a whip. These all seem to have escaped the carnage that has enveloped the rest of the area.
The third cave, the one to the right of the others, was home to two of the ettins. They also have a small stash of treasure concealed in a back niche of their cave. They have less coin on hand, with 800 cp, 140 ep, and 10 gp. This cave is larger than the other two, and has a second chamber off the main chamber that has a long, narrow passage leading back into the hillside. Inside this chamber, the two ettins have a rust monster that they have been keeping as a pet, tossing their metal into the chamber for their pet to feed on.
The otyughs will remain still within the offal, striking out when someone nears them to search for items in the mess. The rust monster will come forward directly to attack when it smells metal inside the cave. It likes to stay deep within the narrow passage, so it won't be able to attack until a round or two after the party enters the larger cave, but once it notices their presence, it will move directly to strike at the character carrying the greatest piece of metal.
After all is said and done, if the party want to make a careful search of the entire site, allow them to locate four spell scrolls among the refuse. None of the creatures living here had any interest in magic, and discarded the scrolls with the clothing as useless. If you feel another magic item or a specific magic item would fit with your campaign, let them find that as well. I think an item or two off Table B or C would be sufficient.