Neff's Canyon is a short yet distinctive canyon just north of Mount Olympus in the Wasatch Mountains. The canyon is a popular location for day hikes in the Salt Lake area. The trail head is at the top of the Olympus Cove. To get to the canyon you will want to take Wasatch Boulevard to Oak View Drive. There is a stop light and pedestrial overpass at this location. You drive east up Oakview Drive. You will then turn left on either Parkview Drive, Matthews Drive or Zarahemla. These roads will bring you to Park Terrace Drive then to the dead end street White Way. The trail head has a large parking lot and a water tank used by Mount Olympus Water.
The canyon drains into an area called the Olympus Cove. The rocks at the entrance to the canyon are limestone. At places in the canyon the strata is vertical. The steep slope of the strata in the area creates both the distinctive face of Mount Olympus and has created the deepest cave in the United States. The cave has a reported depth of 1189 feet. The entrance to the cave is chained off. The National Forest Service guards the key to the cave jealously. The various reports on the cave report that the walls of the cave are crumby and not good for recreational spelunkers.