Wikki Warm Spring is a natural spring with crystal clear water. It is the biggest of the four warm springs situated in Yankari National Park, Bauchi. The spring is mother nature's answer to a spa with a constant temperature of 31 degree centigrade. It is 1.9 metres deep, 13 metres wide and 200 meters long. The water gushes out from a string of chambers under a sandstone cliff. The actual source of the spring is still to be determined.