This verdant ravine forms the natural heart of the temple grounds, sculpted by a small stream meandering through the precinct. Its slopes are draped in a vibrant tapestry of perennial green moss, meticulously cultivated to embody Zen ideals of natural purity. Sheltered by a dense canopy of ancient trees, the canyon fosters a cool, humid microclimate, creating one of Kyoto's most tranquil forest floor ecosystems.