Many of the fires are in regions of peat swamps and underground lignite coal deposits, and these tend to smoulder throughout the year, re-igniting surface vegetation during dry periods.
(Many of the fires; are; in regions of peat swamps and underground lignite coal deposits) (these; tend; to smoulder throughout the year, re-igniting surface vegetation during dry periods) (these; to smoulder; T:throughout the year)
Many of the fires these these
are tend to smoulder
in regions of peat swamps and underground lignite coal deposits
to smoulder throughout the year, re-igniting surface vegetation during dry periods
T:throughout the year