The upside-down flag — traditionally a symbol of distress or a national threat — was strung near the falls and clearly visible.
“We’re bringing attention to what’s happening to the parks, which are every American’s properties,” Gavin Carpenter, a maintenance mechanic with Yosemite and disabled military veteran who supplied the flag and helped hang it Saturday, told the Chronicle. “It’s super important we take care of them, and we’re losing people here, and it’s not sustainable if we want to keep the parks open.”