A dense throng of figures surges from the left, their faces contorted in song or shout, some with mouths wide open and eyes staring, others hidden in shadow or half-turned away. At the front of this group, a man strums a guitar, his instrument angled sharply and his head thrown back as if lost in the music or the fervor of the moment. Clustered around him are women in shawls and men in dark coats and hats, their features rendered with broad, energetic brushstrokes that blur individual identity.

To the right, a solitary figure sits apart from the main group, his face turned in profile and mouth open as if singing or moaning, isolated against the rocky foreground. The setting is stark and open, with rough, rocky ground beneath the figures and a distant suggestion of buildings or outcrops on the horizon. Light falls unevenly across the scene, illuminating the faces and hands of the foreground group while the rest of the composition sinks into shadow and gloom.

The palette is dominated by blacks, ochres, grays, and earth tones, applied with loose, expressive brushwork that gives the surface a restless, almost unfinished quality. The composition is anchored by the compact, solid mass of the crowd at left, set against the emptier, more open space of the right side, where the rocky ground and isolated figures emphasize a sense of desolation. Small details, such as the blank fretboard of the guitar and the varied gestures of the hands—clasped, raised, or gripping garments—add to the sense of agitation and theatricality. A Pilgrimage to San Isidro was created by Francisco Goya in the 1820s as part of his celebrated Black Paintings series.

The same source notes that the painting was donated to the Spanish state in 1881 and is now displayed at the Museo del Prado.