Ransom Keep is one of many self-contained bases across Halo Infinite that initiates a side mission. In this case, reaching Ransom Keep tasks you with exposing and destroying the various fusion reactors scattered around the area. Once completed, Ransom Keep is added as a fast travel location.
Beyond this optional mission, Ransom Keep also contains a few collectibles. There are five collectibles in in total: one spartan core and four audio logs split down the middle between Banished and Spartan
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