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As the war in Ukraine continues to unfold, Ukrainian soldiers are increasingly relying on underground passages—specifically abandoned gas pipelines—to move between defensive positions and the front lines. These routes, once used for infrastructure, have been repurposed as covert pathways through the volatile terrain of active combat zones. The movement is not a new development but a strategic adaptation to the dangers of surface travel, where artillery fire, drone strikes, and heavy shelling make open routes extremely hazardous.
Background: The Evolution of Battlefield Mobility
Since the full-scale invasion began in February 2022, the Ukrainian military has faced persistent pressure from Russian forces across multiple fronts, including the eastern regions of Donetsk and Luhansk. As frontline positions are frequently repositioned or destroyed, traditional movement methods—such as roads and footpaths—have become unreliable or unsafe. In response, Ukrainian units have begun utilizing underground infrastructure, particularly old gas pipelines, which were originally laid during the Soviet era and remain largely intact beneath the surface.
These pipelines, often buried several meters below ground, were designed to transport natural gas over long distances. Over time, many have been decommissioned and left unused. However, their structural integrity and the fact that they run beneath the earth’s surface have made them ideal for military use. The shift from surface to subterranean movement reflects a broader trend in modern warfare: the increasing reliance on hidden, resilient, and less visible routes to avoid detection and destruction.
How the Underground Routes Are Used
According to a report by The New York Times, Ukrainian soldiers travel through these abandoned gas pipes to reach positions near the front lines. The journey begins at rear bases, where troops are stationed in relative safety, and proceeds through a series of tunnels and chambers. These routes are typically accessed via small entry points, often hidden behind vegetation or rubble, and require careful navigation due to the risk of collapses or blocked passages.
The movement is not a single, continuous path. Instead, it involves a network of interconnected tunnels, some of which have been modified to accommodate human passage. Soldiers carry basic gear, including water, food, and communication devices, and move in small, rotating groups to minimize exposure. The routes are often used during periods of low activity, when the risk of aerial or ground attacks is reduced.
One of the key advantages of using underground passages is the ability to avoid direct exposure to enemy fire. Surface routes are frequently targeted by Russian artillery and drones, which can strike with precision and devastating effect. By moving beneath the ground, soldiers reduce their visibility and vulnerability, allowing them to reposition without being detected.
Firsthand Account: A Correspondent’s Journey
The New York Times report includes a firsthand account from Maria Varenikova, a correspondent who joined Ukrainian soldiers on a journey through one of these underground routes. Varenikova describes the experience as both physically demanding and psychologically intense. She notes that the tunnels are dark, damp, and often filled with the smell of old metal and moisture. The walls are uneven, and the temperature fluctuates significantly, especially during shifts in weather.
She observes that the soldiers move with a sense of routine and discipline, relying on established signals and verbal cues to navigate. There are no maps or GPS devices in these tunnels—only memory and experience. The journey takes several hours, and the group stops periodically to rest, often in small chambers that have been repurposed as temporary shelters.
Varenikova also notes that the soldiers are aware of the risks involved. She sees signs of fatigue and stress, with some individuals showing visible signs of physical strain. Despite this, morale remains high, driven by a shared sense of purpose and national resilience.
Logistical and Strategic Implications
The use of underground routes has significant logistical implications. First, it requires a detailed understanding of the terrain and the existing infrastructure beneath it. This knowledge is not publicly available, and access to such information is likely limited to military intelligence units. Second, the maintenance of these tunnels—such as clearing debris, repairing sections, and ensuring ventilation—requires ongoing effort and resources.
From a strategic standpoint, the use of underground passages allows Ukrainian forces to maintain a presence near the front lines without being constantly exposed to attack. This enables them to conduct surveillance, coordinate defensive operations, and prepare for counterattacks. It also allows for more flexible deployment, as units can move in and out of positions without needing to reestablish surface access points.
However, the reliance on such routes also presents vulnerabilities. If a tunnel is compromised—by an explosion, collapse, or enemy infiltration—it can isolate a unit or lead to loss of life. Moreover, the use of these routes may be limited by the availability of suitable infrastructure. In areas where pipelines were never laid or were destroyed during earlier conflicts, alternative routes may not exist.
Comparison with Other Conflicts
While the use of underground movement is not unique to Ukraine, it is notable in the context of modern warfare. In previous conflicts, such as the Vietnam War and the Gulf War, military forces have used tunnels and underground facilities to avoid detection. However, the scale and complexity of the Ukrainian situation—where entire battalions operate in such environments—represents a significant evolution.
Unlike past conflicts, where tunnels were often used for short-term operations or as hiding places, the Ukrainian military has integrated underground movement into a broader operational strategy. This includes the use of tunnels for supply lines, communication, and even medical evacuation. The adaptation demonstrates a high degree of tactical innovation and adaptability in the face of overwhelming force.
Moreover, the use of abandoned infrastructure in conflict zones is a growing trend. In Syria and Yemen, for example, armed groups have used old mine shafts and tunnels to conduct operations. In Ukraine, the repurposing of gas pipelines reflects a similar pattern—leveraging existing structures to meet urgent military needs.
Challenges and Risks
Despite the advantages, the use of underground routes is not without risks. One major concern is the structural integrity of the tunnels. Over time, exposure to moisture, temperature changes, and mechanical stress can weaken the walls. In some cases, sections of the pipeline have collapsed, leading to injuries or fatalities.
Another risk is the potential for enemy detection. While the tunnels are hidden, they may still be monitored through seismic sensors or satellite imagery. If Russian forces have developed the capability to detect such movements, the effectiveness of these routes could diminish. Additionally, the presence of unexploded ordnance or residual gas in decommissioned pipelines poses a hazard.
There is also a psychological toll on soldiers. Prolonged exposure to darkness, confined spaces, and the constant threat of attack can lead to mental health issues such as anxiety, depression, and post-traumatic stress disorder. The New York Times report notes that some soldiers express concern about the long-term effects of such operations, especially when they are required to spend weeks in these underground positions.
Future Outlook and Military Adaptation
As the war continues, the Ukrainian military is likely to refine its use of underground infrastructure. This may include the development of more secure tunnel systems, the integration of ventilation and lighting systems, and the establishment of emergency protocols for tunnel breaches.
Additionally, the use of such routes may become more widespread as the conflict progresses. If Ukrainian forces are able to secure more decommissioned pipelines or identify new underground networks, the strategic value of these routes could grow. However, this will depend on intelligence gathering, engineering capabilities, and the ability to maintain operations under extreme conditions.
Looking ahead, the trend of using subterranean infrastructure in warfare may influence future military planning. As conflicts become more technologically advanced and geographically complex, the ability to operate beneath the surface could become a standard feature of battlefield mobility.
While the current use of gas pipelines in Ukraine is a response to immediate threats, it also serves as a case study in how modern armies adapt to extreme environments. The success of these underground operations will depend not only on physical infrastructure but on the resilience, training, and leadership of the troops who use them.