This was the eighth and final of several, special trail workdays to restore the Upper Sycamore Canyon Trail. The primary objective of the project was to construct a large retaining wall to support a new and wider trail tread. The primary tasks for this work day were to install some drainage structures to protect the newly construed wall. There were five SMMTC volunteers present. Hiked approximately one mile to the worksite. Began work. Installed a low wall as a water diversion at the top of the newly constructed retaining wall. Also installed a large dip swale to drain water off the trail above the newly constructed trail tread. Backfilled behind the wall with rocks and dirt. Completed work. Gathered all tools which had been stashed near the work site and hiked out.