Arches National Park. Jeff Widen and Dawn Burke climbed the Heart of the Desert route, one pitch on Entrada sandstone in the Park Avenue area of the Courthouse Towers section of the park. When viewed from the Park Avenue parking area, the route is on the right side in a large, left-facing dihedral 200 feet before the end of the west-facing wall of Park Avenue. The climbing began atop the lowest bench (I, 5.10c). The same pair made the first ascent of Zippy Zebra, a route directly above a sign regulating speed to 20 mph with a serpentine arrow 1.7 miles into the park from the visitor center. The route is . 1 miles right of the Portable Trash Unit route on the south-facing Entrada sandstone wall (I, 5.10a). Portable Trash Unit is a one-pitch climb made by Widen and Doug Cochran (I, 5.9). It is 1.8 miles from the visitor center and on the second dihedral in from the end of the south-facing wall.