Amenmesse Pyramid Camp
A pyramid being slowly razed by Ptahmose. You'll pass under this camp in the story mission 'The Setting Sun,' but that quest won't actually take you near the location objectives.
You can actually ascend the pyramid via the secret passage in the south wall, but it's probably easier to just climb up the outside. Doing so from the northwest corner allows you to trap the brazier as you enter the area (it's just good opsec).
Use the many, many ropes and spars over the central area to get a drop on the local captain.
Loot the red chest on the east side of this same sunken courtyard to complete the location.