Between the high cliffs of Hall Mesa on the east and the steep slickrock slopes of the Waterpocket Fold on the west, the hike through the Halls Creek drainage (known as Grand Gulch) explores the park's southern reaches. Along the way, hikers can explore numerous side canyons that join the Halls Creek drainage. At the remote southern tip of the park is the 3.8-mile (6.0 km) Halls Creek Narrows, deeply incised into the white Navajo sandstone. A perennial stream and shade from the arching canyon walls create an oasis in the midst of surrounding desert.