Hosepipes Against the Inferno: Indonesia’s Predictable Rainforest Disaster

Decades of invaluable scientific research and one of the last intact lowland rainforest ecosystems in Borneo are currently being defended against advancing flames with little more than a punctured hose and a hand-dug trench. In Indonesia’s Gunung Palung National Park, seasonal fires have advanced to within 200 metres of the Rangkong research station. Without drastic intervention, the flames are projected to reach the primary Cabang Panti station four miles north within three weeks.

The catastrophe is neither accidental nor unpredictable. Every year, land on the island is intentionally set ablaze to clear forest, a routine economic practice that turns destructive when paired with severe climate fluctuations. This year, an extraordinarily strong El Niño has stripped West Kalimantan province of rainfall for months, transforming dense peatlands into a tinderbox. What begins as routine agricultural burning quickly expands into an unmanageable firestorm.

On the ground, the defense relies on an ad-hoc team of roughly 40 field assistants, staff, and local villagers working non-stop. Their primary task is saturating the surrounding peat, a treacherous substrate that, once ignited, can smoulder underground for months long after surface flames are extinguished. Yet, improvised sprinkler systems made from damaged hoses are hardly an adequate match for an escalating regional crisis. Representatives from the Gunung Palung orangutan conservation programme have acknowledged that the situation has breached local operational limits, pointing out that effective containment now requires large-scale aerial water bombing and professional firefighting units.

The stakes extend well beyond timber and scientific infrastructure. Cabang Panti represents a 32-year continuous record of wild ape observation, pioneered by Boston University anthropologist Cheryl Knott. The site has provided foundational insights into the Bornean orangutan, including the discovery that the species possesses an eight-year reproductive cycle, the longest of any mammal. An estimated 2,500 of these critically endangered primates reside in the national park. Because orangutans are solitary, wide-ranging animals that cannot simply be crowded into remaining patches of forest, the destruction of their habitat threatens the local population directly.

Field personnel from the local conservation organization Yayasan Palung have already reported seeing individual orangutans from long-term study groups fleeing within metres of the fire line. With meteorological forecasts predicting intense drought conditions through October as El Niño strengthens, the window for protecting both the research infrastructure and the surrounding ecosystem is rapidly closing.

Written by Thomas Nussbaumer thomas.nussbaumer@alpineweekly.com