View to the west-southwest with Sinyala Canyon in the lower left corner and Havasu Canyon above it. Mt. Sinyala is an isolated remnant of the South Rim, and can be seen between the two canyons. To the north (right) of the Colorado River, Boysag Point (foreground) and S B Point (near top edge) are part of the North Rim.

   The river continues in a narrow gorge. The Bright Angel Shale remains below river level and thus the massive Redwall/Muav Limestone cliff rises straight up from the edge of the river. The large flat area is the Esplanade, which separates the deep inner gorge and the outer rims.

   Here in the western part of the Grand Canyon the Watahomigi Formation, the lowest member of Supai Group, forms a distinct slope in-between the Supai’s upper layers and the underlying sheer cliff of the Redwall/Muav limestones.