Bonfire Blocks are special types of blocks that have so far only appeared in the Wario Land series, namely in Wario Land II, Wario Land 3, Wario Land 4 and Wario Land: Shake It. They appear as red blocks with a yellow border and a picture of a flame imprinted on them. In the first two games, they have a basic block appearance, while the Wario Land 4' incarnation took on a stony look.
In Wario Land: Shake It!, they appear to be made of metal. These blocks are impenetrable; not even a bomb can break it. The only way to destroy a Bonfire Block is by having Wario turn into Flaming Wario and make contact with the block. Bonfire Blocks are usually placed in strategic places and often hide treasure, coins, or a Warp Pipe. A similar block is the Snowman Block, which will break when made contact with Snowman Wario.