All of the old trees that survived on the peat hillocks show searing only on the lower parts of their trunks, which indicates that the fire moved along the ground;
(the old trees; survived; L:on the peat hillocks) (All of the old trees; show; T:searing only on the lower parts of their trunks) (their trunks; indicates; that the fire moved along the ground) Context(their trunks indicates,List([96, 125))):(the fire; moved; along the ground)
their trunks indicates,List([96, 125))
the old trees All of the old trees their trunks the fire
survived show indicates moved
L:on the peat hillocks
T:searing only on the lower parts of their trunks
that the fire moved along the ground
along the ground