Core Access is a room in Metroid Prime 3: Corruption which is a relatively narrow passageway to the Bryyo Leviathan Core. In it, Samus encounters three Missile Blockers obstructing the way, each of which she must shoot the exposed center of with either Charge Beam shots or an Ice Missile in order to progress. Various parts of the Core Access are made up of an almost completely transparent material (assumingly consisting of Phazon of some sort), allowing view of the inaccessible area immediately outside of the room. The room (in some ways) resembles Crater Tunnel A and B in the Impact Crater.