• Underground Delta-01 LCC, 44th Missile Wing/66th Strategic Missile Wing logos, topside view of Delta-09 LF

    Minuteman Missile

    National Historic Site South Dakota

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  • Traffic Alert

    I-90 Exit 131 (Visitor Contact Station) is open in both directions. Exit 127 (Launch Control Facility) is closed to eastbound traffic, but open to westbound traffic. Pick up all tour tickets at exit 131. Allow extra time to travel to Delta-01 for tours.

  • No Tours available on Tuesday, October 7

    Due to a staff shortage, there will be no tours provided of D-01 on this date. D-09, the missile silo, will remain open for self-guided tours.

Tour Safety


Ladder leading from underground at Delta-01


As part of the tour at Delta-01 visitors will have the opportunity to visit the underground Launch Control Center (LCC).

The LCC was not originally designed to accommodate the general public. It is accessed by an elevator and a ladder. In the event of an elevator failure, visitors that are underground will need to be capable of climbing the ladder for a safe and timely exit.

Visitors who wish to participate in the underground part of the tour must be able to:

1) Physically capable of climbing two 15 foot ladders. These ladders are permanently attached to the wall and are very sturdy.

2) Children must be at least 40” tall and be able to climb the ladder unassisted

3) Be comfortable in a small elevator

4) Be comfortable with heights of approximately 35 feet or about 3 stories. The elevator door is an open grate, not a solid door.

Did You Know?

Minuteman Missile in silo at Delta-09

Minuteman Missiles were considered technological wonders because they were the United States first solid fuelled intercontinental ballistic missiles (ICBMs) which allowed for: a) hair-trigger launch response b) precise accuracy c) remotely controlled and d) could be mass produced.