Periodic Spring
Located 4 miles east of Afton in the Salt River
Range, is the largest of three natural springs in
the world that naturally turn off and on. Water
flow is interrupted from anywhere between 3 to 30
minutes, generally between the months of August-
May. It is thought that a cave behind the spring
createsa siphon which causes the interruptions of the
water flow. Its ability to turn off and on during
low discharge stages has fascinated visitors since
prehistoric times. Access to the spring is via the
Swift Creek Road and requires a 3/4 mile hike by
Trail.
