The red is iron, not legend. Hematite and oxidised volcanic rock stain the eastern shore of the Salar de Aguas Calientes, and the colour holds against white borax crust and turquoise brine at roughly 4,000 metres above sea level. The site sits on Ruta 23-CH, the paved artery that climbs south-east from the Salar de Atacama toward the Paso Sico crossing into Argentina. Every Tour Piedras Rojas San Pedro de Atacama traces that ascent, gaining more than 1,500 vertical metres in under three hours of driving. The road was cut for copper, sulphur and border freight long before it carried visitors; the mineral trucks still use it. Custodianship belongs to Socaire, the Lickanantay village set among stone-walled agricultural terraces below the escarpment. The community administers the site, maintains its marked paths and collects the conservation fee — 10,000 CLP per foreign adult for one site, 15,000 CLP for combined entry — which funds trail work and ranger presence. The fee is collected at the barrier and is not folded into most Tour Piedras Rojas San Pedro de Atacama tickets. Gates operate 08:00–18:00, seven days a week. The address on permits is plain: Salar de Aguas Calientes, near Socaire, San Pedro de Atacama, Chile. Geology explains the rest. Laguna Miscanti and Laguna Miñiques were once a single alpine body of water, severed by a lava flow from the Miñiques volcano; the two now sit at about 4,120 metres, divided by a ridge of dark andesite. Cerro Miscanti rises to 5,622 metres behind them. Vicuña graze the coirón grass in loose family groups. Andean gulls nest along the shorelines, and horned coots work the shallows. The salt basins hold water so mineral-dense that it freezes late and evaporates in violent seasonal pulses. What makes the place matter now is the scarcity of any comparison. Few landscapes set red, white and blue in such unmediated adjacency, and fewer still remain under indigenous administration rather than state concession. Vehicle numbers are limited, and access closes when wind or snow makes the Paso Sico road unsafe. Chilean listings sell it as tour piedras rojas desde San Pedro de Atacama; English-language operators fold it into a wider Atacama altiplano circuit that usually takes in the Salar de Talar and the flamingo colonies at Laguna Chaxa. Whatever the label, the sequence is identical — desert floor, salt basin, altiplano — and a well-run Tour Piedras Rojas San Pedro de Atacama tour reads that sequence as a single geological argument rather than a list of stops.