The Intermittent Springs, also called a Periodic Spring, is a rare naturally occurring spring which runs for 18 minutes, and then completely stops for another 18 minutes before starting again. It is the largest of such springs in the world, and only 2 others are known to even exist. Before the Mormon settlers came to the valley, the spring was frequented by Native American Indians who referred to it as “the spring that breathes”.
The best time to view the spring is during the late summer, and early fall, when the spring starts and stops. During the other times of the year this is not the case. It is a short 20 minute hike on a well maintained trail up Swift Creek Canyon. Once you get to the bottom of the spring you can also hike up to the mouth of the spring. The terrain can be a little slick, steep, and tricky in spots, so wear good shoes if you plan on making the hike. It is well worth the time to visit the springs and take in the beauty of roaring water. They also provide picnic tables, so pack a lunch and make an afternoon of it! You will not be disappointed.
To get there from The Old Mill, head north to Afton, and turn right on Second Avenue, which will lead you through the residential part of Afton, once you hit gravel road, you are in Swift Creek Canyon, keep following the road until you come to a parking area where you must get out and walk the rest of the way.