SOS – Save Our Skyline!

The Umunhum Conservancy is a non-profit corporation dedicated to the preservation and restoration of Mt. Umunhum and its historic Radar Tower.

The historic Radar Tower atop Mt. Umunhum will be demolished unless the Conservancy raises funds to preserve it.

Mt. Umunhum and the Radar Tower are owned by the Mid-Peninsula Regional Open Space District (MROSD).  They do not spend funds on historic preservation.  Unless the Conservancy raises approximately $1.5 million by October 2017, MROSD will demolish all or most of the Radar Tower.

As of November 2015 we are approximately 20% of the way to that goal.  Thank you for your support!

For more information, please see our FAQ.

Matching Grants!

Donations between now and the end of 2015 just got better! Awesome supporters have agreed to match all donations received between now and the end of 2015!  The first $20,000 received will be matched.  Donate now! The power of your donation will be doubled!

New: MidPen’s New Concept for the Tower

The MidPeninsula Regional Open Space District has unveiled their plan for the Tower if the Conservancy doesn’t raise funds to preserve it.  They published a concept image of the Tower with the upper 4 stories removed and the remaining parts used as a pergola … a shade structure.

The historic Tower reduced to a shade structure.

The Conservancy believes that treating an historic building in this manner is inappropriate. These plans make it clear why we must preserve the Tower!  Together we can preserve our local historic landmark…ALL of it!

New Dates!

Come learn about the history of this fascinating site, see actual artifacts, and enjoy a slide show of amazing historic photos of the radar station when it was in operation between 1958 and 1980. Presented by Basim Jaber (Historian/Archivist and founder of the USAF 682nd Radar Squadron Veterans Association, and member of the Umunhum Conservancy Board).

For presentation dates and registration information, click here!

Historic Preservation Update

Thank you to everyone who came to the April 16th meeting of the Santa Clara County Historical Heritage Commission and asked them to put the Tower atop Mt. Umunhum on the County’s Heritage Resource Inventory! The Commission was very impressed with your input.  They will go through several additional steps before making a recommendation; we will let you know when the next meeting on the topic is. 

If the Tower is officially declared “historic” then it will be more difficult to demolish. Ultimately the funds will still need to be raised to repair and preserve it, even if it is listed on the Inventory.

Support from Local Leaders

Numerous local political figures and other community leaders support preserving the Radar Tower atop Mt. Umunhum.  Check out the list, and thank them for their support!


Thanks to our friends at KMVT, here is an interesting interview with Conservancy Director Basim Jaber about the history of Mt. Umunhum and the Conservancy!