DECODING BOOM BOOM ROCK

Back when I was still actively chasing the cycling challenge of conquering 100,000 meters in elevation on Son Tra Mountain, I rode my bike countless times along the winding trails beneath the Radar station on the peak of Monkey Mountain. The ultimate goal of those grueling rides was to locate a specific boulder known as Boom Boom Rock—a famous outdoor hangout and check-in spot for American soldiers during the 1960s and 1970s.

And then, during a cycling trip nearly six years ago, I burst with joy upon discovering that the boulder was still standing there. Its structure remained completely intact, quietly hidden amidst the lush, overgrown foliage of the peninsula as if silently waiting for old friends to return. This exact physical reality was what I previously depicted in my articles “Boom Boom Rock” (2021) and “Danang Tourism Forgets Boom Boom Rock” (2026).

From 1965, when American troops began extensive deployment on the peak of Son Tra, until their withdrawal in 1972 under the Paris Peace Accords, Boom Boom Rock continuously wore different “coats” of graffiti. Every time a new unit arrived to replace the old one, they would paint over the existing images and slogans to mark their territory.

Today, utilizing historical data gathered from wartime veterans, I venture to “decode” the deeper meanings behind the markings and graffiti that once covered this legendary boulder.

1. BOOM BOOM ROCK – Wartime “Fun” Slang

This uppercase inscription was the earliest lettering to appear on the surface of the boulder. This name, which is both onomatopoeic and figurative, actually originated from bar girls in Thailand and Cambodia who used the phrase “boom boom” to invite American soldiers for commercial adult entertainment.

The slang followed the troops and imported itself into South Vietnam starting in 1965. The catchphrase “Hey you, go boom boom?” coupled with suggestive hand gestures was a universal sign language that even the greenest soldier far from home could grasp instantly.

2. FUBAR – The Ultimate Grim Wartime Sentiment

At a later stage, when the boulder received a fresh coat of paint, the words “BOOM BOOM” were replaced by the highly prominent acronym FUBAR. In fact, American veterans stationed there during that era explicitly referred to the site as FUBAR Rock.

FUBAR is a crude military slang acronym that originated during World War II: Fucked Up Beyond All Recognition (or Beyond All Repair). Its raw meaning translates to: “Totally ruined past the point of recognition” or “Broken beyond any fix.”

The fact that American soldiers repeatedly spray-painted “FUBAR” onto the rock on Son Tra’s peak vividly reflects their deep frustration, burnout, and profound despair regarding the reality of the war at that time. This specific term later achieved global fame when it appeared continuously in the classic war film “Saving Private Ryan”.

3. THE MTN EXPERIENCE – Wild Counterculture & Anti-War Spirit

This stands for “The Mountain Experience.” Set against the brutal, isolating conditions on the peak of Son Tra, the phrase carries heavy sarcasm and deep irony.

The lettering “The Mtn Experience” was painted in a free-spirited, wild typography heavily influenced by the Hippie counterculture movement that was booming back in the United States during the late ’60s. For these young draftees, their “mountain experience” was far from a poetic retreat; it meant enduring relentless monsoon weather, fighting extreme isolation on a remote peak, and facing the constant fear of death.

Crucially, this phrase was illustrated encircling a massive Peace sign. This served as a powerful anti-war manifesto, loudly broadcasting the troops’ desperate longing for a ceasefire, an end to hostilities, and a ticket back home to civilian life.

4. The Red Inscription Below “CONST” – Defiance

The red abstract graphic painted on the lower section, directly underneath the word “CONST,” represents raw rebellion and a challenge to rigid military discipline. During the Vietnam War, this specific style of graffiti was frequently painted onto helmets, field jackets, or bunker walls by rebellious young soldiers to assert their anti-establishment defiance.

5. Unit Codes and Timestamps (CAMP/DET, CONST, 101)

Alongside emotional anti-war expressions, Boom Boom Rock served as a physical logbook for rotating troops via military abbreviations:

• CAMP/DET: Short for Camp/Detachment.
• CONST: Typically stands for a Construction (Seabees or Engineers) unit.
• 101: A number highly likely tied to the infamous 101st Airborne Division, or a specific communications/radar unit attached to the Monkey Mountain outpost.
• 1968, 1969: Numerical timestamps scattered across the surface to mark the exact deployment years of incoming cohorts.

The layering of different paints and drawings visible across historical slides proves that a miniature “territorial war” played out right on the rock. Incoming groups routinely chose to obliterate the anti-war messages or unit names of their predecessors to establish their own presence.

Conclusion

Following the liberation of Danang on March 29, 1975, the wartime graffiti and lettering on Boom Boom Rock were completely blotted out with messy coats of paint—whether intentionally or accidentally.

Today, while the physical appearance of Boom Boom Rock has radically changed—leaving behind only a silent, moss-covered boulder blending into the jungle—it is actually easier to find than ever before. More and more people, including domestic adventurers and international tourists, actively seek out this boulder to connect with a unique historical witness on the Son Tra Peninsula.

I write this decoding piece with the hope that anyone who stumbles upon old archival photos of Boom Boom Rock will understand a little more about the layers of history, the human psyche, and the raw emotions of those who walked this mountain generations ago.

___ Mr. Old Man