Grape-stomping (also known as pigeage) is part of a method of  maceration used in traditional winemaking.  For a slight fee-- on the California scale, one could participate grape-stomping and receive a tee-shirt with grape-juice footprints.  These grapes, in a half-barrel, await a stomper.  I passed.

Wine Country Series #3
Napa Valley - Rutherford, California