The entrance leads to a staircase, which opens into a small hangar. The layout of the bunker is similar to the Hidden Valley bunker, itself modeled on the interior of Raven Rock. The password is 'Dear old friends, Remember Navarro'.
After speaking to the five members of the Enclave Remnants, you will have collected the password necessary to enter.
The bunker is sealed by a password that can only be obtained through Arcade Gannon's companion quest, For Auld Lang Syne. According to Judah Kreger, the bunker is an old Enclave Vertibird refueling station. Some members of the Enclave took refuge in the bunker, while others integrated into other towns and settlements. Sometime after the destruction of Control station Enclave, the New California Republic sacked Navarro, spreading the Enclave across the wasteland.
