Nestled into a rocky hillside in the Vienna Woods, the Maria Lourdes Grotto at Maria Gugging glows with votive candles and the white form of the Virgin Mary high in the cliff face — a beloved pilgrimage site founded by parish priest Caspar Hutter and recreating the sacred grotto of Lourdes, France, in the heart of Lower Austria. The card carries a three-stanza German-language devotional poem by Hutter himself on the front, making it a devotional keepsake as much as a postcard. Mailed on May 15, 1951, with an Austrian 30-Groschen stamp (a Trachten/traditional costume series issue in violet), it was sent by an unidentified sender from the Missionsgesellschaft Maria Gugging to a recipient named Weixelbaum in Ottenschlag, Lower Austria, with a warm personal greeting surviving in pencil on the reverse.