Fingal's Cave a walkway just above high-water level permitting exploration on foot. From the inside, the entrance seems to frame the island of Iona across the water. Romantic composer Felix Mendelssohn visited in 1829 and wrote an overture, "The Hebrides", Op. 26, (also known as "Fingal's Cave overture"), inspired by the weird echoes in the cave. Mendelssohn's overture popularized the cave as a tourist destination. Other famous 19th-century visitors included author Jules Verne, who used it in his book "Le Rayon Vert" ("The Green Ray"), and mentions it in the novels "Journey to the Center of the Earth" and "The Mysterious Island";
Overture poem, a form devised by Franz Liszt in several works that began as dramatic overtures. The distinction between the two genres was the freedom to mould the musical form according to external programmatic requirements (Temperley 2001). The symphonic poem became the preferred form for the more "progressive" composers, such as César Franck, Richard Strauss, Alexander Scriabin, and Arnold Schoenberg, while more conservative composers like Anton Rubinstein, Tchaikovsky, Johannes Brahms, Robert Schumann and Arthur Sullivan remained faithful to the overture. In the age when the symphonic poem had already become popular, Brahms wrote his "Academic Festival Overture", Op. 80, as well