This short video was taken during our visit to Furnas in September 2014.
It shows the area on the banks of Furnas Lake where Cozido das Furnas (a meat and vegetable stew) is cooked underground using the natural heat from the earth in this area of volcanic activity.
It takes around 6 hours for the stew to cook. Having seen the underground cooking holes and witnessed the pots being removed, we made our way to a nearby restaurant (Banhos Ferreos) to taste the stew. The meat was deliciously tender.