Below is a guide on where you can find the Spartan Cores in the Southwestern Region of Zeta Halo which can be used to upgrade your armor in Halo Infinite.
Core 1
Located on a ledge overlooking a chasm northwest of the Cayman Squad map marker.
Core 2
This core can be found at a Banished drop pot site east of FOB Foxtrot.
Core 3
This core can be found south of FOB Foxtrot in the wreckage of a pelican.
Core 4 – Ransom Keep
Located on the south side of the keep in a makeshift scrapyard next to a yellow crate.
Core 5
Found along the cliffs east of Ransom Keep.
Core 6 – Carrera Squad
This core can be found in a chasm west of the Carrera Squad marker on your map.
Core 7 – The Tower #1
This core can be found in a storage crate under The Tower near where the giant hologram was during The Tower mission.
Core 8 – The Tower #2
This core can be found on the third level of The Tower near some UNSC crates during The Tower mission.
For a guide on the locations of all the Spartan Cores, click here!