We parked in Los Molinos and took the PR HU-43 trail west between fields down to the river. From there the trail wound up through pine wood to the Cuello de San Berturián at 883m. We turned south to follow a stony, later grassy, track south up to a weather station. From there a steeper path led up through the trees to the hermitage and trig point on the summit. We returned by our outward route in increasing heat. With ALT.