Ayalon Institute | Rehovot

Information
Landmark: Ayalon Institute
City: Rehovot
Country: Israel
Continent: Asia

Ayalon Institute, Rehovot, Israel, Asia

The Ayalon Institute is a national historical site and museum in Rehovot, located on "Kibbutz Hill." It preserves the remains of a clandestine underground ammunition factory that operated between 1945 and 1948, right under the eyes of the British Mandatory authorities.

Visual Characteristics

On the surface, the site appears to be a traditional 1940s-era kibbutz, complete with a laundry room, a bakery, a dining hall, and agricultural buildings. Beneath this facade lies a 300-square-meter concrete chamber, 8 meters underground, which housed a fully functional bullet factory. The contrast between the pastoral, sunlit kibbutz buildings above and the dimly lit, industrial machinery of the "pit" below is a central feature of the site’s design.

Location & Access Logistics

The museum is situated on the northern outskirts of Rehovot, near the Kiryat Hamada (Science Park) and the Rehovot train station. It is accessible via Route 412. Visitors can park at the dedicated lot on Holtzman Street. Access to the underground factory is through two secret entrances: one located beneath a massive commercial washing machine and another concealed under a 10-ton bakery oven. A modern spiral staircase has been added to facilitate visitor entry.

Historical & Ecological Origin

Established in 1945 by the Haganah, the factory was built in just 22 days. It was operated by 45 young men and women who produced over 2.25 million 9mm bullets for the Sten submachine guns used during the War of Independence. To maintain secrecy, the laundry ran 24 hours a day to mask the noise of the machines, and workers used ultraviolet lamps to maintain a tan so their paleness wouldn't betray their long hours spent underground.

Key Highlights & Activities

Visits are conducted via guided tours (available in Hebrew and English) and include an introductory audiovisual presentation. Key highlights include the demonstration of the rotating washing machine that reveals the secret ladder and the exploration of the underground production floor, where much of the original machinery has been restored to working order. Visitors also see the sun-tanning room and the specialized ventilation chimneys disguised as bakery flues.

Infrastructure & Amenities

The museum complex includes a visitor center, a film screening room, and public restrooms. The site is a recognized national heritage site and is supported by the Council for the Preservation of Heritage Sites in Israel. While the above-ground area is accessible, the descent into the underground factory involves stairs and a confined environment. Reservations are mandatory for all tours.

Best Time to Visit

The museum is open Sunday through Thursday from 8:30 AM to 4:00 PM, with shorter hours on Fridays and holiday eves. It is an ideal year-round destination, as the underground temperature remains stable regardless of surface weather. Advanced booking is required, especially for English-language tours and group visits.

Facts & Legends

A verified historical detail is that the British military actually used the kibbutz’s laundry service, unaware that their uniforms were being cleaned directly above the factory producing the bullets used against them. Another unique fact is the code name "Ayalon" itself, and the bullets produced here were stamped with the letters "EA" (Eretz Israel/Ayalon).