Trinity Site Open House
Trinity Emblem

This event is free.  For more event details click on the information links/short videos below or contact the WSMR Public Affairs Office at 575-678-1134. 


Dates for the Trinity Site Open House are now April 2 and October 15 for 2022.

WSMR employees may not access the Trinity Site Open House through the SMR Gate since it is not considered official business. They will have to come in through the Stallion Gate or with the Alamogordo Caravan. Those attempting to use the SMR Gate will be turned away by DES at the site.

 Date and Time

 April 2, 2022 


October 15, 2022

The first Saturday in April and third Saturday in October.

 Stallion Gate Hours:

 8 a.m. - 2 p.m.

 Trinity site prompt closure:

3:30 p.m.

 Alamogordo Caravan

Due to the annual increase in the number of visitors to the Trinity Site Open Houses. The Alamogordo caravan is only open to the first 125 vehicles.  The limit is necessary to maintain a safe environment enroute to Trinity Site.  All others will have to enter the site through the Stallion Gate located off U.S. Highway 380, View directions here.  The route is approximately the same time and distance as the caravan route.

 Members of the Press

Members of the press who would like to cover the upcoming Trinity Site open house must register with our Public Affairs Office.  Please click the media registration link below to register:

Media Registration For Trinity Site Open House (

 Trinity Site Videos

Play All
Trinity Video

 External Links Disclaimer

‚ÄčThe appearance of external hyperlinks does not constitute endorsement by the United States Army of the linked web sites, or the information, products or services contained therein. For other than authorized activities such as military exchanges and Morale, Welfare and Recreation (MWR) sites, the United States Army does not exercise any editorial control over the information you may find at these locations. Such links are provided consistent with the stated purpose of this page.

This page was last updated on 4/4/2022 9:45 AM