Why is a peat hearth so dangerous? BBC is in Indonesia to search out out

The BBC’s Liza Tambunan is in central Kalimantan, as Indonesia is going through its worst wildfire season in a decade.

A poisonous haze has been choking tens of millions of residents within the area, and has unfold to neighbouring nations reminiscent of Singapore and Malaysia.

So why has it been so dangerous? Tambunan explains what peat is, and why peatland fires are so tough to include.