A Swedish fire log, also known as a Canadian candle, is a log that has been vertically cut and set on fire. The log burns from the inside out and the fire can last for two to five hours depending on the size and material of the wood.
Brighid is seen as a triple Goddess, and she is associated with three different spheres—high (leaping flames, tall forts, wisdom), middle (hearth and home), and low (wells and sacred springs). Description from pinterest.com. I searched for this on bing.com/images