The "butatiw" or "butattew" is a phenomenon that has fascinated people for centuries. It's a bright light or group of lights that you see from a distance at night-time. You usually see them at a far-off mountain. They look like they are dancing as they tend to dart from side to side.
The "butatiw" inexplicably grows bright, dims, then grows bright again. It also has the abilities to divide, multiply in number, and then merge again to become one. One moment, you are seeing one light, the next moment you see two or three lights. It also seem to be able to travel from one place to another with amazing speed. In the blink of an eye, the light can disappear then reappear on the other side of the mountain.
Cordillerans have various names for this mysterious light. They call it "butattaw" in Kalinga. The Kalanguyas call it the "banbanillag". The Ibalois call it the "buntatew" or "buntato". The Balangaos in Mountain Province call it the "manmanangaw". The Bontocs call it the "futattiw".
What exactly is this "butatiw"? The answers are diverse depending on who you ask. Some say these are harmless ghosts. Some say these are bad omens - a sign that there will be a death in the village or a natural disaster is approaching. Some say these are friendly spirits that guide lost travelers. Some say these are gods who have come down to earth to check on their creations. More modern interpretations say these are the lost souls of those who died during the Japanese occupation.
Taking these folkloric interpretations aside, is there a scientific explanation for these ghostly lights. Actually, there is and it's called the will-o-the-wisp phenomenon. The lights are a product of the combustion of natural gases. This combustion often occurs in marshy lands. This combustion produces the flame-like phosphoresence that people see from a distance.
This makes sense because the "butatiw" usually makes an appearance after a heavy rain.
These mysterious lights are very common in folklore all over the world.