As previously announced, the Johnson Valley Shared Use Area will be temporarily closed to the public from August 14-25, 2025. During this time, the area will be used to conduct Marine Air Ground Task Force (MAGTF) Warfighting Exercise, a comprehensive force-on-force exercise that challenges MAGTF units to be innovative and adaptive by simulating conflict against a peer adversary. This closure is essential to ensure the safety of both military personnel and the public.
The Marine Corps will also temporarily close the area on the following dates in 2026:
Temporary closure periods include time to inspect the land for safety before reopening to the public. The adjacent Johnson Valley Off-Highway Vehicle Recreation Area remains open during temporary closures of the Shared Use Area.
Be aware, live-fire training is conducted year-round at the Combat Center. Recreationists are urged to respect base boundaries and avoid trespassing.
For current information, including a map of the affected area and information on receiving closure updates via email or text message, the public is encouraged to visit: www.29palms.marines.mil/johnsonvalley/.
Email: SMBPLMSJOHNSONVALLEY@usmc.mil.
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Marine Corps Air Ground Combat Center Twentynine Palms
P.O. Box 788105Marine Corps Air Ground Combat CenterTwentynine Palms, CA 92278
Phone:760-830-3737
Email:SMBPLMSJOHNSONVALLEY@usmc.mil