Not on fire - but that is indeed smoke coming off the top. Fires were burned inside these traditional houses, with the smoke rising to the roof to help preserve the wood and to get rid of troublesome insects.
I can't imagine what that kind of life was like, living in a smoke-filled house - it certainly made my eyes water walking around inside this one.
I apologise in advance if I'm tardy with commenting on your blogs or returning comments during the week... I will get to you though!