June 10, 1960 – The Pack Mules Through Nature’s Wonderland Attraction Opens
On June 10, 1960, the Pack Mules Through Nature’s Wonderland attraction opened in Disneyland’s Frontierland. This was the third incarnation of this type of attraction, as it was previously Rainbow Ridge Pack Mules (open from 1956 through 1959) and Mule Pack (open from 1955 through 1956). Guests rode on mules through Frontierland past several Disneyland landmarks to the town of Rainbow Ridge, which can still be found in the shadow of Big Thunder Mountain. The attraction was closed in 1973.