Are frequent forest fires types of Spontaneous combustion or rapid combustion Because in a video of types of combustion of - Science - Combustion and Flame

Question

Are frequent forest fires types of Spontaneous combustion or
rapid combustion?Because in a video of types of combustion of
combustion and flames chapter it says that it is a type of
spontaneous combustion Here rapid combustion signifies that it
happens in the presence of external heat whereas in spontaneous
combustion no external heat is given Isn't forest fire a type of
rapid combustion because it happens because of sun's heat Experts
please answer the correct option to solve my confusion

Abhinav Koul · Answer

Here external heat is reffered as heat which is applied by
humans Sun's heat is natural heat but here we are talking about
artificial heat or heat which is given by objects made by humans
Forests fire can be of both spontanegeous as well as rapid
combustion as sometimes fire occurs by the fireplaces where people
come to camp and also by sun's heat