At the east end of the Dillingham Airfield, 15 minutes from Haleiwa Harbor, a finger of the Waialua Wall extends seawards. A large wash rock rests on that plateau in 20 feet, approximately a half-mile offshore. Devil's Rock rises four to five feet above the surface marking the position for diving in varied topography. The inshore rock is a sheer drop to a sand bottom at 70 feet. The frequent turtle sightings are indicative of all the sites along the North Shore area. A couple of vertical cracks, five to ten feet wide, on each side of the wall, hide lobster - but are good for shelling, including tiger cowries. Excellent snorkeling is available around the washrock, which is nicely encrusted with healthy corals. The seaward side drops to over 90 feet, and is an active area for dolphins during the summer months, and whale sightings during the spring.