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 opposed to one serving to begin a later section of the work". Although by the end of the eighteenth century opera overtures were already beginning to be performed as separate items in the concert hall, the "concert overture", intended specifically as an individual concert piece without reference to stage performance and generally based on some literary theme, began to appear early in the Romantic era. Carl Maria von Weber wrote two concert overtures, "Der Beherrscher der Geister" ('The Ruler of the Spirits', 1811, a revision of the overture to his unfinished opera "Rübezahl" of 1805), and "Jubel-Ouvertüre" ('Jubilee Overture', 1818,