Cu Chi Tunnels: Crawling Through Vietnam's Underground War Network

Beneath the red laterite soil northwest of Ho Chi Minh City lies a network of tunnels that once stretched over 250 kilometers. Dug by hand over decades, the Cu Chi tunnels served as supply routes, living quarters, hospitals, weapons factories, and command centers for Viet Cong fighters during the war against the United States. Entire communities lived underground, sometimes for years at a time, in passages so narrow that many Western soldiers physically could not fit inside them.

Today, two sections of the tunnel network are open to visitors as war memorial sites. Walking through the preserved tunnels, seeing the ingeniously disguised entrances, and crawling through darkened underground passages offers a visceral understanding of the conflict that no museum or textbook can match. It is one of the most visited historical sites in Vietnam and the most popular day trip from Ho Chi Minh City.

The History

Tunnel construction in the Cu Chi district began during the French colonial resistance in the late 1940s. Initially simple hiding spots and supply caches, the tunnels were dramatically expanded during the American War (as it is known in Vietnam) through the 1960s and early 1970s. At their peak, the tunnel system stretched from the outskirts of Saigon to the Cambodian border, connecting villages, bases, and supply lines across a vast area.

The tunnels were built on multiple levels, typically three, descending to depths of up to 10 meters. They contained living quarters, kitchens with ingenious smokeless stoves that dispersed cooking smoke through ground-level channels, field hospitals, meeting rooms, and weapon workshops. Air vents were disguised as termite mounds or hidden in bushes. Entrances were concealed under rocks, cooking pots, or forest debris, often invisible to someone standing directly on top of them.

The American military designated Cu Chi a "free-fire zone" and subjected the area to massive bombardment, chemical defoliation with Agent Orange, and flooding operations. Specialized "tunnel rat" soldiers were sent into the passages, often armed with only a pistol and a flashlight. Despite these efforts, the tunnel network was never fully destroyed, and it played a critical role in the Tet Offensive and the eventual outcome of the war.

Ben Dinh vs. Ben Duoc: Which Site to Visit

The Cu Chi Tunnels are preserved at two separate sites, each offering a different experience.

Ben Dinh

This is where the vast majority of visitors end up, and nearly all organized tours from Ho Chi Minh City go here. The tunnels have been widened to accommodate larger body types, electric lighting has been installed, and the overall experience is more structured and accessible. It is busy, sometimes uncomfortably so during peak morning hours, but the guided tours are well-organized and informative. The documentary film shown at the start provides important context, even if its tone is heavily one-sided.

Ben Duoc

The less-visited alternative is worth the extra travel time. The tunnel sections here are closer to their original dimensions, meaning the crawling experience is more authentic and more challenging. The site is five times larger than Ben Dinh with more spread-out exhibits, jungle surroundings that feel less manicured, and a fraction of the visitors. If you want a more immersive and less commercial experience, Ben Duoc is the better choice. Some private tours and independent travelers specifically target Ben Duoc.

What You Will See and Do

Both sites follow a similar format. A guide leads your group through an outdoor trail with stops at various points of interest.

• Documentary film: A short propaganda-era film shown in a basic theater provides historical context. The language is blunt and politically charged, which is itself historically interesting.
• Tunnel entrance demonstrations: Guides show how nearly invisible trapdoor entrances worked, and visitors can try climbing in and out of them. Most people are astonished at how small the openings are.
• Booby trap displays: Recreated trap pits and devices used against enemy soldiers are displayed along the trail. These are graphic and sobering.
• Underground kitchens and living quarters: Reconstructed rooms show how people ate, slept, and worked underground for months or years.
• Tunnel crawling: The main attraction. Designated sections of tunnel are open for visitors to crawl through. These passages are dark, hot, and confined. At Ben Dinh, they have been enlarged and lit, with exit points every 20 meters so you can bail out if needed. At Ben Duoc, the dimensions are closer to original. Even the widened tunnels are tight enough to make most visitors glad to emerge after 40 or 50 meters.
• Shooting range: An on-site range where visitors can fire AK-47s, M16s, and other war-era weapons at paper targets. Rounds cost about 40,000 to 60,000 VND each (roughly $2). This is loud and optional.

How to Get There

Organized Tours

The most common and convenient option. Half-day group tours from Ho Chi Minh City start at around 400,000 VND ($16) per person for a basic bus tour, while small-group or private tours run 1,000,000 to 2,200,000 VND ($40 to $87). Tours include hotel pickup, air-conditioned transport, an English-speaking guide, and admission. Most half-day tours take about five to six hours total including travel. For more day trip options from Ho Chi Minh City and transport guides across Vietnam, check GoAsia.cc.

By Public Bus

Budget travelers can reach the tunnels by public bus, though it requires patience. Take Bus 13 from Ben Thanh Market to Cu Chi district, then transfer to Bus 79 (for Ben Duoc) or Bus 63 (for Ben Dinh). The total journey takes 2.5 to 3 hours each way and costs about 60,000 VND round trip. This is slow and the connections are not always smooth, but it is doable.

By Motorbike or Taxi

A Grab car from central HCMC takes about 1.5 hours and costs roughly 400,000 to 500,000 VND each way. Renting a motorbike and riding yourself is an adventure on the busy roads out of the city, but it gives you full flexibility and costs only the rental fee plus fuel.

By Speedboat

Some operators offer a speedboat trip up the Saigon River to the tunnels, combining a scenic river journey with the tunnel visit. These tours are more expensive (around 1,500,000 to 3,000,000 VND) but the river trip adds a different dimension to the experience.

Practical Information

Tips for Visiting the Cu Chi Tunnels

• Choose Ben Duoc if you want authenticity. Most tours go to Ben Dinh because it is closer and more set up for large groups. If you book a private tour or go independently, request or head to Ben Duoc for a less crowded, more genuine experience.
• Wear light, breathable clothing. The tunnels are hot, humid, and airless. You will sweat. Wear quick-drying clothes and avoid anything bulky. Long pants are advisable to protect your knees while crawling.
• Bring a small flashlight. While the tourist tunnels at Ben Dinh have some lighting, sections are still quite dark. Ben Duoc tunnels are even darker. A phone flashlight works but a small headlamp is better because it frees your hands for crawling.
• Skip the tunnel if you are claustrophobic. The crawling sections are genuinely tight, low-ceilinged, and dark. This is not a metaphor. If enclosed spaces cause you genuine anxiety, the above-ground exhibits are interesting enough on their own. There is no shame in passing on the crawl.
• The shooting range is optional and loud. If you are not interested, walk past. If you are, be aware that the noise level is intense and ear protection is minimal. The range sits near the tunnel area and the gunfire can be startling if unexpected.
• Morning visits are best. Arrive as close to 8:00 AM opening as possible. Tour buses from HCMC start arriving around 9:30 to 10:00 AM, and by late morning the site can feel overwhelmed. Early arrivals get a quieter, more contemplative experience.
• Prepare for a confronting experience. The Cu Chi Tunnels do not sanitize the reality of war. Booby trap displays, descriptions of underground surgery, and the documentary film are graphic and emotionally heavy. This is appropriate given the subject, but visitors with young children or sensitivity to war imagery should be aware.
• Combine with the Mekong Delta. Some full-day tours combine the Cu Chi Tunnels in the morning with a Mekong Delta trip in the afternoon. These are long days (10 to 12 hours) but pack two of HCMC's most popular day trips into one.