Wildfires have been burning across parts of Indonesia for weeks, generating thick smoke that has drifted across the country and into neighbouring Malaysia, Singapore, and the Philippines. The ongoing blazes have raised renewed concerns about regional air quality and public health as toxic haze blankets the affected areas.

Environmental experts and analysts point out that battling these blazes presents a massive logistical and technical challenge. The nature of the terrain and the specific type of landscape fuel where the fires burn make conventional firefighting methods exceptionally difficult to execute effectively.

A primary factor complicating the response is the prevalence of peatlands in the affected regions. Peat is an accumulation of partially decayed organic matter that has built up over thousands of years in water-saturated environments. When these areas are drained for agriculture or commercial development, the dried peat becomes extremely flammable.

Unlike standard surface vegetation, peat fires burn underground and can smoulder undetected for long periods. These subterranean fires are notoriously resilient and difficult to extinguish completely with surface water alone, requiring massive amounts of moisture and deep-earth intervention to truly put out.

Furthermore, the fires produce dense, toxic smoke containing high levels of particulate matter and pollutants. Weather patterns and seasonal winds frequently carry this hazardous haze across national borders, impacting millions of people in Southeast Asia and creating recurring diplomatic and environmental challenges for the region.