Caroline plunging needles from the fuel shoot into the firebox:
The stove has 4 adjustable air inlets; they allow for a proper burn, but also allow the user to visually monitor activity within the firebox:
Once up to temperature, the spiral gets RED hot!
Normally, burning pine needles release plumes of gases:
Top view of the spiral component. The gases enter the spiral via the central hole, burn as they travel around the spiral, and then exit out the chimney:
Here are a couple of wood stoves in India:
