A Stronghold Door is a type of door that appears in the various Stronghold Voids in Metroid Prime Hunters. They are very much like normal doors, and can be opened with any weapon. When shot, it will flash once, before fading dull, and opening when Samus approaches it. One appears in the Oubliette. These doors open from the center, similar to Phaaze and Leviathan Doors, and glow with an aqua green aura. According to its scan, these doors are synchronized with the security protocols of Stronghold Portals.
"This door is synchronized with STRONGHOLD PORTAL security protocols. Status: minimal shielding.